BOSTON SCIENTIFIC CORPORATION ET AL V. COOK GROUP INCORPORATED ET AL

Filing 962

ORDER granting in part and denying in part 620 Motion for Summary Judgment; granting in part and denying in part 630 Motion for Summary Judgment; granting in part and denying in part 634 Motion. (See Order.) Signed by Judge James R. Sweeney II on 01/31/2023. (SNB)

Case 1:17-cv-03448-JRS-MJD Document 962 Filed 01/31/23 Page 1 of 103 PageID #: 47282

UNITED STATES DISTRICT COURT
SOUTHERN DISTRICT OF INDIANA
INDIANAPOLIS DIVISION
BOSTON SCIENTIFIC CORP. and
BOSTON SCIENTIFIC SCIMED, INC.,
Plaintiffs,
v.
COOK GROUP INCORPORATED and
COOK MEDICAL LLC,
Defendants.

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No. 1:17-cv-03448-JRS-MJD

Order on Motions for Summary Judgment and Motion to Preclude
This is a patent infringement case. Before the Court is Defendants' Motion to
Preclude Evidence and Untimely Theory Relied on by Plaintiffs in their Motion for
Summary Judgment (hereafter, "Motion to Preclude"). (ECF No. 634.) Additionally,
the Court will address Plaintiffs' and Defendants' Cross-Motions for Summary
Judgment. (ECF Nos. 620 & 630.)
I.

Background1

Plaintiffs/Counterclaim Defendants Boston Scientific Corporation ("BSC") and
Boston Scientific Scimed, Inc. ("BSSI") (collectively "Plaintiffs" or "Boston Scientific")
brought this patent infringement action against Defendants/Counterclaim Plaintiffs
Cook Group Incorporated ("CGI") and Cook Medical LLC (collectively with CGI,

The Court finds that Plaintiffs' brief is not deficient. While Defendants correctly note that Plaintiffs'
Statement of Material Facts is rather sparse, (ECF No. 633 at 20), Plaintiffs' brief cited to the record
extensively for the Court. The Court will not dismiss Plaintiffs' summary judgment motion on this
ground.
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"Defendants" or "Cook"), in the District of Delaware in October of 2015. (ECF No. 1.)
The three asserted patents are U.S. Patent No. 8,685,048 ("'048 patent"), U.S. Patent
No. 8,974,371 ("'371 patent"), and U.S. Patent No. 9,271,731 ("'731 patent")
(collectively, the "Asserted Patents" or "patents-in-suit"). (ECF Nos. 451-2, 451-4,
451-5.)

In 2016, Defendants filed several Inter Partes review ("IPR") petitions

directed to the Asserted Patents. (ECF Nos. 74, 254.) In August of 2017, the District
of Delaware granted Defendants' request to stay the case pending the IPRs. (ECF
No. 304.) While stayed, the case was transferred to this Court. (ECF No. 316.)
Plaintiffs and Defendants are both major competitors in the medical device
industry. The Asserted Patents are directed toward a reversibly closeable endoscopic
hemostatic clip.

(See ECF No. 451-2 at 2.)

Such clips are used for treating

gastrointestinal bleeding. (Id. at 39.) Plaintiffs assert seven claims across their three
patents-in-suit against two of Defendants' products: (1) the Instinct and (2) the
Instinct Plus (each an "Accused Product" and collectively the "Accused Products").
The following is a summary of the remaining claims asserted against the Accused
Products: (1) Claims 3, 4, 7, and 14 of the '048 patent are asserted against both the
Instinct and the Instinct Plus; (2) claim 13 of the '371 patent is asserted against both
the Instinct and the Instinct Plus; and (3) claims 5 and 19 of the '731 patent are
asserted against only the Instinct Plus. The parties have brought many arguments;
the Court will address each in turn.

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II.

Defendants' Motion to Preclude Evidence

The Court will first address Defendants' Motion to Preclude, (ECF No. 634), in
order to determine the scope of evidence that is available at the summary judgment
stage. Defendants ask the Court to exclude from consideration on summary judgment
the following: (1) Mr. Leinsing's opinions on cumulativeness; (2) Mr. Lhymn's
opinions on IPR estoppel; and (3) Plaintiffs' reliance on a "new" infringement theory
for the "link" required by claims 3, 4, 7, and 14 of the '048 patent.
A. Mr. Leinsing's Opinions on Cumulativeness
Defendants seek to exclude Leinsing's opinions regarding cumulativeness
between certain prior art devices and printed publications provided in support of
Plaintiffs' arguments relating to IPR estoppel, arguing the opinions are untimely in
violation of the Court's Case Management Plan and Fed. R. Civ. P. 26(a). (Defs.' Mot.
to Preclude, ECF No. 636 at 9.) Per the Court's Case Management Plan, "[t]he party
with the burden of proof as to any liability issue . . . shall serve the report required
by Fed. R. Civ. P. 26(a)(2) on or before January 11, 2022." (ECF No. 468 at 1, ¶ II.C.)
"If a party fails to provide information or identify a witness as required by Rule 26(a)
or (e), the party is not allowed to use that information or witness to supply evidence
on a motion, at a hearing, or at a trial, unless the failure was substantially justified
or is harmless." Fed. R. Civ. P. 37(c)(1). The arguments in this section can therefore
be broken down into three parts: (1) whether Plaintiffs had the burden of proof on
cumulativeness (therefore requiring service by January 11, 2022) and, if so, (2)

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whether their untimely expert report written by Leinsing was substantially justified
or (3) harmless.
1. Burden of proof as to cumulativeness
Plaintiffs and Defendants agree that Plaintiffs bear the ultimate burden of proof
on Plaintiffs' IPR estoppel argument under 35 U.S.C. § 315(e). (ECF No. 636 at 10
(citing Clearlamp LLC v. LKQ Corp., No. 12 C 2533, 2016 WL 4734389, at *9 (N.D.
Ill. Mar. 18, 2016)); Pls.' Resp., ECF No. 672 at 13 (same).) Therefore, Plaintiffs
needed to serve any expert reports related to their IPR estoppel argument by January
11, 2022.

Rather than dispute this requirement, Plaintiffs instead attempt to

distinguish cumulativeness from IPR estoppel and suggest that they did not bear the
burden of proof as to this issue. (ECF No. 672 at 13.)
The Court can quickly dismiss two arguments.

First, Plaintiffs argue that

Defendants' reliance on Clearlamp is inappropriate because that case did not address
the issue of cumulativeness of prior-art systems.

(Id.) This is not correct. See

Clearlamp, 2016 WL 4734389, at *8–10 (discussing cumulativeness at length).
Second, Plaintiffs argue that Leinsing "first needed to know the particular
structures of the prior-art systems on which Nicosia was relying" before rendering
an opinion on whether those structures were disclosed in a printed publication subject
to IPR estoppel. (ECF No. 672 at 13 (emphasis in original).) But this argument has
nothing to do with the burden of proof; rather, as Plaintiffs themselves seem to
realize, it is more appropriate in determining whether the delay in serving the report

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was justified. (See ECF No. 672 at 13–14 (discussing why Leinsing could not feasibly
address cumulativeness in his initial report until reading Nicosia's report).)
Plaintiffs' attempt to distinguish cumulativeness from IPR estoppel fails;
cumulativeness is not a separate doctrine from IPR estoppel. Rather, cumulativeness
is one avenue that a party can use to argue IPR estoppel. IPR estoppel, codified under
35 U.S.C. § 315(e)(2), states that a "petitioner in a post-grant review of a claim in a
patent . . . may not assert . . . in a civil action arising in whole or in part under section
1338 of title 28 . . . that the claim is invalid on any ground that the petitioner raised
or reasonably could have raised during that post-grant review." In other words, the
IPR estoppel doctrine seeks to prevent a defendant from making the same invalidity
arguments they previously made (or reasonably could have made) in a prior IPR
proceeding. Cumulativeness is the idea that a "petitioner cannot put forth invalidity
arguments in litigation that rely solely upon patents or printed publications that
could have been raised in the IPR, and then claim that IPR estoppel does not apply
because these printed materials reflect or represent a prior art product." Medline
Indus., Inc. v. C.R. Bard, Inc., No. 17 C 7216, 2020 WL 5512132, at *5 (N.D. Ill. Sept.
14, 2020) ("The IPR petitioner in that situation is improperly attempting to disguise
a ground that could have been raised during the IPR as one that could not have been
raised."); see also Vaporstream, Inc. v. Snap Inc., No. 2:17-cv-00220-MLH (KSx), 2020
WL 136591, at *23 (C.D. Cal. 2020 Jan. 13, 2020) (citation omitted) ("'[I]f a patent
challenge is simply swapping labels for what is otherwise a patent or printed
publication invalidity ground in order to "cloak" its prior art ground and "skirt"

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estoppel,' then § 315(e)(2) estoppel still applies."). Thus, because cumulativeness is a
way for a patentee to show that a petitioner is estopped from presenting certain
invalidity arguments at the district court based on prior art systems and devices,
cumulativeness and IPR estoppel are inextricably linked, and as such, the burden of
proof is on the patentee (here, Plaintiffs).
Therefore, per the Court's Case Management Plan, Plaintiffs had to serve any
report with arguments on cumulativeness on or before January 11, 2022. They did
not. The Court must next determine whether this delay was justified or harmless.
2. Whether the delay in serving Leinsing's report was justified
Plaintiffs argue that the delay in Leinsing's report was justified because
Defendants' invalidity contentions, served on December 27, 2021, "failed to identify
the structures of the prior-art systems upon which [Defendants] would rely." (ECF
No. 672 at 13–14.) This, too, is incorrect.
The Court fails to find, nor have Plaintiffs pointed to, any examples of "particular
structures" that Nicosia identified in his report that were not likewise identified in
Defendants' earlier invalidity contentions. (See id.) Plaintiffs repeatedly assert that
Defendants' contentions lacked references to these "particular structures," and
Leinsing himself makes a general and vague claim that the contentions "often do not
identify the particular features or structure of the device" upon which Defendants
rely for their invalidity arguments.

(Leinsing Report, ECF No. 621-77 at 19.)

Plaintiffs thus argue that Leinsing "needed to know" the specific structures Nicosia
would be relying on in order to analyze whether those structures were disclosed in a

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printed publication subject to IPR estoppel; in other words, he simply could not have
provided his cumulativeness opinion based on Defendants' invalidity contentions
alone. (ECF No. 672 at 13–14.)
Upon examining the opinion ultimately given by Leinsing and the structures in
fact relied on in support, the Court fails to see how this is the case. As an example,
an analysis of Leinsing's very first argument on cumulativeness, the Marlow Nu-Tip,
is illustrative. Defendants rely on the Marlow Nu-Tip to allegedly invalidate the '371
and '731 patents. For instance, they argue that claim 13 of the '371 patent would
have been obvious in view of the Marlow Nu-Tip in combination with the Adams '245
patent. (Defs.' Contentions, ECF No. 548 at 94.) Leinsing then argues that each of
the Marlow Nu-Tip features relied on by Defendants is cumulative of features
described in printed publications that are estopped. (See ECF No. 621-77 at 19–20.)
Leinsing cites to both Nicosia's report and Defendants' contentions for this opinion.
(Id.) But BSSI points to no evidence supporting its assertion that Leinsing could not
have reached his conclusions without Nicosia's report. In his report, Lensing defines
the particular features that Defendants rely on (which he argues are all cumulative)
as the "handle, push rod, capsule, clip assembly, control element, sheath, ball and
socket, end effector designed to detach, and insertion and expanded configurations."
(Id. at 19.) But these features were not missing from Defendants' contentions. It is
true that Nicosia's report discloses these features. (Nicosia Report, ECF No. 584-1 at
338–39.) However, so do Defendants' contentions. In fact, Defendants' contentions
provide the exact features that Leinsing discusses in his cumulativeness opinion.

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(See, e.g., ECF No. 548 at 94 (discussing the Marlow Nu-Tip comprising "a capsule,
and a clip assembly housed within the capsule for movement between an insertion
configuration and an expanded configuration); ECF No. 548 at 95 (displaying a
diagram and discussing the features of "a control element removably connected to the
clip assembly via a ball-and-socket connection, and a sheath extending from a
proximal to a distal end and covering a portion of the control element").) This analysis
holds true for Leinsing's cumulativeness opinions on other references as well. (E.g.,
compare ECF No. 621-77 at 25–26 with ECF No. 547 at 56–58 and ECF No. 584-1 at
116–20 (showing Leinsing's conclusion that features of the Olympus HX-2, relied on
by Defendants, are cumulative, wherein said features (such as a covering tube, coil
pipe, lock sleeve, etc.), are fully disclosed in Defendants' contentions).)
Thus, the Court sees no reason that Leinsing could not have provided his
cumulativeness opinion on January 11, 2022, by relying solely on Defendants'
contentions. Plaintiffs have not explained, nor has the Court found, a reason that
Nicosia's report would be needed for Leinsing's opinion; the delay in serving
Leinsing's opinion is therefore unjustified.
3. Whether the delay in serving Leinsing's report was harmless
"The determination of whether a Rule 26(a) violation is justified or harmless is
entrusted to the broad discretion of the district court." Mid-Am. Tablewares, Inc. v.
Mogi Trading Co., Ltd., 100 F.3d 1353, 1363 (7th Cir. 1996). In determining whether
a party's failure to comply with a discovery deadline under Fed. R. Civ. P. 37 is
harmless, the Seventh Circuit considers four factors: "(1) the prejudice or surprise to

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the party against whom the evidence is offered; (2) the ability of the party to cure the
prejudice; (3) the likelihood of disruption to the trial; and (4) the bad faith or
willfulness involved in not disclosing the evidence at an earlier date." David v.
Caterpillar, Inc., 324 F.3d 851, 857 (7th Cir. 2003). In examining these factors, the
Court finds that Plaintiffs' delay was harmless.
Plaintiffs argue that Defendants are not prejudiced because Leinsing's report was
served on February 8, 2022, more than a month before the close of liability discovery
on March 11, 2022, and almost three months before Defendants' opening dispositive
motion was due.

(ECF No. 672 at 15.)

Arguably, however, any prejudice to

Defendants arises from the fact that Leinsing's cumulativeness opinion was not
presented until the last possible day for service of expert reports; thus, Defendants
could not respond with a rebuttal expert report of its own within the original Case
Management Plan. (See ECF No. 468 at 1.) But Defendants still had the opportunity
to move for a supplemental round of expert reports and could still depose Leinsing in
any event. See Uncommon, LLC v. Spigen, Inc., 926 F.3d 409, 419 (7th Cir. 2019)
(applying the Caterpillar factors) ("Rule 37 . . . provides recourse for parties actually
harmed by a litigant's noncompliance with disclosure obligations. It does not
safeguard a party's decision to sense an error, seize on it, and then, when it is
resolved, claim incurable harm in the face of apparent remedies.")
In fact, Defendants did depose Leinsing on March 4; yet they did not ask Leinsing
a single question about his cumulativeness opinion. (See Defs.' Reply, ECF No. 704
at 13–15.) Even if deposing Leinsing by itself is not a complete "cure" for any

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prejudice, (id. at 15), it would be a start. See, e.g., Endotach LLC v. Defendants Med.
Inc., No. 1:13-cv-01135-LJM-DKL, 2017 WL 3873693, at *9 (S.D. Ind. Sept. 5, 2017).
Also, Defendants, in early March, did move for a supplemental round of expert
reports, albeit for a different issue, which Plaintiffs did not oppose and which the
Court granted. (ECF No. 613.) Yet, Defendants did not file any motions or make any
arguments to the Court or Plaintiffs as to their disapproval of Leinsing's
cumulativeness opinion until this Motion to Preclude was filed on May 6. (ECF No.
634.) Defendants knew they could move for a supplemental round of expert reports,
and they could have addressed the untimely report during Leinsing's deposition, but
instead made no attempts to address their issues with Leinsing's opinions at all until
this

stage.

In

any

event,

and

arguments

concerning

burden

shifting

notwithstanding2, (ECF No. 704 at 14), any prejudice was not only within Defendants'
ability to cure but was harmless upon consideration of the other Caterpillar factors.
See Uncommon, 926 F.3d at 419 ("There was no surprise to [the prejudiced party] and
no delay in the proceedings, and while there was likely some prejudice, it was neither
unforeseeable nor incurable—even if the cure was not [the prejudiced party]'s
strategic preference.").

Defendants cite to several cases stating that the non-compliant party has the burden of showing that
their violation was justified or harmless; in other words, the non-compliant party has the burden of
showing that the Caterpillar factors weigh in their favor. (Id.) This is all accurate; however,
Defendants then make an erroneous logical jump, stating that because this burden is on the noncompliant party, it is the non-compliant party that has the burden to cure the prejudice. (Id.) That is
simply not the case. The non-compliant party has the burden to show that the prejudiced party had
an ability to cure the prejudice; the non-compliant party is not expected to cure the prejudice
themselves.
2

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The third and fourth Caterpillar factors likewise favor a finding that Plaintiffs'
delay was harmless. Turning to the "likelihood of disruption to the trial" factor,
Leinsing's opinion was served a year before trial, which, as noted, provided ample
time both to seek an additional round of expert reports and to depose Leinsing on the
subject without disrupting the trial.
As to the fourth Caterpillar factor, there is no evidence of "bad faith or willfulness"
on Plaintiffs' part.

Concepts of "willfulness" and "bad faith" usually require

"intentional or reckless behavior." Uncommon, 926 F.3d at 418 (citing Brown v.
Columbia Sussex Corp., 664 F.3d 182, 191 (7th Cir. 2011)). Rather, Defendants argue
that Plaintiffs must have known that their expert opinions related to IPR estoppel
had to be served by January 11 because their other report related to IPR estoppel
(Lhymn's report on skilled searcher opinions) was properly served on that date. (ECF
No. 704 at 15.) While perhaps true, Plaintiffs' conduct does not rise to intentional or
reckless behavior.

Plaintiffs have had issues with Defendants' contentions well

before this Motion to Preclude, and they reasonably reached out to Defendants
regarding their concerns. (ECF No. 573-7 at 9–12.) When confronted about their
contentions, Defendants told Plaintiffs that Nicosia's report would "clarify" their
concerns. (Id. at 2.) Plaintiffs' decision to wait for Nicosia's report before supplying
Leinsing's cumulativeness opinion, while perhaps not free from fault does not rise to
the level of intentional or reckless behavior considering the surrounding
circumstances and communications between the parties.

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In considering all of the Caterpillar factors, the Court finds that Plaintiffs' delay
in providing Leinsing's cumulativeness opinion was harmless.

Accordingly,

Defendants' Motion to Preclude, (ECF No. 634), as to Leinsing's cumulativeness
opinion is denied.
B. Mr. Lhymn's Opinions on IPR Estoppel
Defendants next seek to preclude Lhymn's opinions regarding IPR estoppel.
Specifically, they ask the Court to exclude (1) opinions regarding Defendants'
purported knowledge of the prior art and (2) opinions regarding what a skilled
searcher "could" possibly find. The Court will address these requests in turn.
1. Lhymn's opinions on Defendants' knowledge of the prior art
Defendants argue that Lhymn's opinions on Defendants' purported knowledge of
certain prior art constitute inadmissible "state of mind" testimony. (ECF No. 636 at
13.) Expert testimony is appropriate where "scientific, technical, or other specialized
knowledge will assist the trier of fact to understand the evidence or to determine a
fact in issue." Huey v. United Parcel Serv., Inc., 165 F.3d 1084, 1087 (7th Cir. 1999)
(quoting Fed. R. Evid. 702). In Plaintiffs' own words, Mr. Lhymn is an expert on
"prior-art invalidity searches." (ECF No. 672 at 19.) Accordingly, the Court finds
that his "knowledge, skill, experience, training, or education," Fed. R. Evid. 702, does
qualify him to opine on what prior art is and what has previously been identified as
prior art, either in the entity's own related prosecution histories or in its invalidity
contentions. This is pure knowledge, though. Such knowledge does not cross over
into state of mind, which might be, for example, why a piece of prior art known to an

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entity is not disclosed to the USPTO during prosecution or to the PTAB during an
IPR. That being said, the court does not need such expert testimony to determine
this knowledge because it is clear from the record and the law. See Litton Sys., Inc.
v. Honeywell, Inc., 140 F.3d 1449, 1465 (Fed. Cir. 1998) ("[T]he prosecution history is
objective evidence of what knowledge the applicant has of the art."); Wi-LAN Inc. v.
LG Elecs., Inc., 421 F. Supp. 3d 924, 925 (S.D. Cal. 2019) ("Several district courts
have held that the identification of prior art in invalidity contentions generated prior
to the filing of the IPR petition is sufficient to establish as matter of law that the
accused infringer knew of those prior art references."); see also Avenatti v. Gree USA,
Inc., No. 2:20-cv-00354-JPH-MJD, 2022 WL 3134425, at *2 (S.D. Ind. Aug. 5, 2022)
(citation omitted) ("The 30(b)(6) designee 'must not only testify about facts within the
corporation's knowledge, but also its subjective beliefs and opinions,' as well as the
organization's 'interpretation of documents and events.'").

Also, armed with the

knowledge of the references cited in Defendants' related prosecution histories, for
example, a skilled searcher such as Lhymn can opine as to what he would consider to
be related art in order to develop a prior art search strategy. (ECF No. 672 at 19;
ECF No. 621-33 at 14–15, 70-71.) Namely, he is qualified to address under 35 U.S.C.
§ 315(e)(2) whether a piece of prior art was one which "a skilled searcher conducting
a diligent search reasonably could have been expected to discover." Wi-LAN Inc. v.
LG Elecs., Inc., 421 F. Supp. 3d 911, 924 (S.D. Cal. 2019) (citations omitted). Still,
Defendant's motion to exclude is granted to the extent the court will not consider any
state of mind opinions. See Lanard Toys Ltd. v. Anker Play Prods., LLC, CV 19-4350-

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RSWL-AFMx, 2020 WL 6873647, at *7 (C.D. Cal. Nov. 12, 2020) (citations omitted)
("Courts routinely exclude as impermissible expert testimony as to intent, motive, or
state of mind.").
To be clear, the Court is merely excluding Lhymn's opinions that Defendants
"knew" of the existence of certain prior art; the remainder of Lhymn's opinion (i.e.,
his conclusions as to what a diligent searcher reasonably could have found) remains
admissible. Accordingly, Defendants' Motion to Preclude is granted to this extent.
2. Lhymn's skilled searcher standard
Defendants next object that Lhymn relied on an incorrect legal standard for the
"skilled searcher" prong of IPR estoppel; therefore, Defendants argue that his opinion
is unreliable and will not assist the trier of fact. (ECF No. 636 at 16.)
Defendants and Plaintiffs agree on the same overarching legal standard. To
review, IPR estoppel prevents a petitioner in a post-grant review from asserting in a
civil action that a patent claim is "invalid on any ground that the petitioner raised or
reasonably could have raised during that post-grant review." 35 U.S.C. § 315(e)(2)
(emphasis added). In interpreting the word, "reasonably," in relation to the discovery
of prior art, many district courts have adopted the standard articulated in Clearlamp.
There, relying on the legislative history of § 315(e)(2), the court stated: "Adding the
modifier 'reasonably' ensures that could-have-raised estoppel extends only to that
prior art which a skilled searcher conducting a diligent search reasonably could
have been expected to discover." Clearlamp, 2016 WL 4734389, at *8 (emphasis
added); see also Pavo Sols., LLC v. Kingston Tech. Co., No. 8:14-cv-01352-JLS-KES,

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2020 WL 1049911, at *4 (C.D. Cal. Feb. 18, 2020) (adopting the same standard). The
Court also finds this standard persuasive.
However, Defendants argue that Lhymn then applied this "skilled searcher"
standard improperly.

Specifically, Defendants assert that Lhymn relied on an

improper reasonableness standard when considering what a skilled searcher
"reasonably could" have been expected to discover. (ECF No. 636 17–18.) In this
context, Defendants state that Clearlamp's standard uses "would" rather than
"could." (Id. (citing Clearlamp, 2016 WL 4734389, at *9 (emphasis added) ("One way
to show what a skilled search would have found would be (1) to identify the search
string and search source that would identify the allegedly unavailable prior art and
(2) present evidence, likely expert testimony, why such a criterion would be part of
a skilled searcher's diligent search.")).) Defendants argue that "would" crucially and
properly contemplates the reasonableness standard embedded within the phrase,
"reasonably could have been expected to discover." This argument was explained in
Palomar, a case on which Defendants chiefly rely:
To be clear, the standard cannot be that a reasonable search could have,
or might have, discovered the disputed reference. It is almost always
possible to construct a search scenario—particularly with the benefit of
hindsight—under which a skilled searcher could locate a reference with
a relatively small number of steps. Instead, the standard must account
for the fact that the relevant databases are huge, the technology is often
complex, and there are almost infinite ways to construct a search. The
touchstone is reasonableness, not perfection. Accordingly, the
appropriate standard for the objective prong is one of probability, not
possibility: that is, whether it is more probable than not that a skilled
searcher conducting a diligent search reasonably could have been
expected to discover the disputed reference.

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Palomar Techs., Inc. v. MRSI Sys., LLC, No. 18-10236-FDS, 2020 WL 2115625, at *3
(D. Mass. May 4, 2020). Defendants then direct the Court's attention to Lhymn's
report, wherein he states the following:
I further understand from counsel that one way of showing a skilled
searcher’s diligent search is to identify the relevant search string and
search source that could identify the allegedly unavailable prior art and
explain why such a criterion could be part of a skilled searcher’s
diligent search.
ECF No. 621-33 at 12 (emphasis added) (noting the difference between Lhymn's
articulation compared to the court in Clearlamp).

And therein lies Defendants'

principal grievance. Defendants urge that Lhymn's misstatement of the Clearlamp
standard verbatim (namely, "could" vs. "would") renders the standard inaccurate and
results in an unreliable and useless report written by Lhymn. The Court cannot
agree.
The Court is not minimizing Defendants' argument. But Defendants' emphasis
on this distinction is not as significant as they suggest. First, Defendants assert that
Plaintiffs make misleading arguments regarding the use of "could" because they point
back to the "overarching language of the estoppel statute," (ECF No. 704 at 19); in
other words, Defendants argue that Plaintiffs are relying on the following phrase out
of § 315(e)(2) to support their "could" standard: "invalid on any ground that the
petitioner raised or reasonably could have raised during that post-grant review."
This, of course, would not be proper as this is the principal estoppel standard; but
this is not what Plaintiffs do. Rather, Plaintiffs (and Lhymn) cite to the Clearlamp
standard, which applies the IPR estoppel statute to prior art references. (ECF No.
672 at 24 (emphasis in the original) ("IPR estoppel applies to references that were
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known to the petitioner or reasonably could have been discovered by a skilled
searcher conducting a diligent search."); see also ECF No. 621-33 at 12 (stating
this same standard).) Clearly, this standard uses a "reasonably could" term.
Defendants' argument is best explained by the passage cited to above from
Palomar. See 2020 WL 2115625, at *3 ("To be clear, the standard cannot be that a
reasonable search could have, or might have, discovered the disputed reference. It is
almost always possible to construct a search scenario—particularly with the benefit
of hindsight—under which a skilled searcher could locate a reference."). It would
make no sense for IPR estoppel to preclude the use of any prior art that "could" have
been discovered with a diligent search. As the court in Palomar notes, this would
preclude every reference. But the Clearlamp standard takes this into account by
adding the term "reasonably" before "could." This, by itself, limits the inquiry to
searches that would have been "reasonable" to make. Defendants are placing too
much weight on Clearlamp's subsequent two-part inquiry regarding "one [of the]
way[s]" to show what a skilled searcher "would have found." Clearlamp, 2016 WL
4734389, at *9. The court there does not emphasize any distinction between the
overarching standard and their sudden use of the word "would." In fact, contrary to
Defendants' argument, the court in Clearlamp uses "would" and "could"
interchangeably. For example, a deep dive into the very paragraph where the court
briskly provides their two-part skilled search inquiry (that uses "would") is
illustrative. There, the court begins the paragraph by stating, "[i]n accordance with
the § 315(e)(2) standard, the [relevant prior art reference] can be used in civil

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litigation only if it could not have been found by a skilled searcher performing a
diligent search." Id. The court did not say "reasonably could" nor did it say "would."
After stating the overarching standard (which includes "reasonably could" within it),
the Clearlamp court did not need to rearticulate the standard verbatim throughout
its opinion. Reasonableness is clear on the face of the standard.
The explanatory passage from Palomar also supports this conclusion. After going
through their discussion of the Clearlamp standard and emphasizing the importance
of reasonableness, the Palomar court concludes with the following: "Accordingly, the
appropriate standard for the objective prong is one of probability, not possibility: that
is, whether it is more probable than not that a skilled searcher conducting a diligent
search reasonably could have been expected to discover the disputed reference."
Palomar, 2020 WL 2115625, at *3 (emphasis added).
implicitly equates "reasonably could" with "would."

The Palomar court even

First, the court adopts and

describes Clearlamp's standard as one of two prongs: a subjective prong, i.e., "(1) the
IPR petitioner actually knew of the reference" and an objective prong, i.e., "(2) a
skilled searcher conducting a diligent search reasonably could have been expected to
discover the reference." Palomar, 2020 WL 2115625, at *3 (emphasis added). But
only a few sentences later, the court refers to the objective prong inquiry as follows:
"would a reasonable search have discovered the reference?" Id. (emphasis added).
Ultimately, what is clear is that the standard must contemplate a reasonable search.
It is not dispositive whether the standard uses "could" or "would."

The overall

standard uses "reasonably could," and so long as an expert's opinion is legitimately

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considering the reasonableness and probability of a prior art search occurring, the
expert is relying on the proper legal standard; on the other hand, if the expert merely
opines that a prior art reference could possibly be found and provides little to no
support showing why this search would be reasonable, then the opinion relies on an
incorrect standard and is impermissible.
Defendants' arguments to the contrary notwithstanding, their cited cases do not
take heed of a "would" vs. "could" distinction. To summarize this analysis in different
terms, when courts use "could," they are implicitly referring to "reasonably could"
from the Clearlamp standard. See, e.g., Clearlamp, 2016 WL 4734389, at *9. While
"would" likewise properly considers this reasonableness requirement, it is not a
necessary term for the standard.
Examining Lhymn's report, the Court can confirm that Lhymn relied on the
proper legal standard for his opinion. First, in his "Legal Standards" section, Lhymn
begins by properly referencing the IPR estoppel statute under §315(e)(2). (ECF No.
621-33 at 12.) Next, Lhymn outlines the proper Clearlamp standard that he must
use in his analysis. (Id. (emphasis added) ("I further understand from counsel that a
petitioner reasonably could have raised a ground and/or reference during inter partes
review when . . . a skilled searcher conducting a diligent search reasonably could
have been expected to discover the ground and/or reference.").) Finally, Lhymn
refers to one of the ways that an expert can show a skilled searcher's diligent search.
(Id. ("[O]ne way of showing a skilled searcher’s diligent search is to identify the
relevant search string and search source that could identify the allegedly unavailable

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prior art and explain why such a criterion could be part of a skilled searcher’s diligent
search.").) As discussed, it is this paragraph that has drawn Defendants' objection
because Lhymn says "could" rather than "would" as is otherwise stated in Clearlamp.
But for the reasons discussed above, the Court will not dispose of Lhymn's entire
opinion for this turn of phrase; the proper legal standard was already articulated in
his report, and more importantly, Plaintiffs have shown that Lhymn was making his
findings based on what a diligent searcher "reasonably could" find. The Court will do
the same. Lhymn did not make unsupported, barebones assertions that a prior art
reference could be found by a diligent searcher. Rather, Lhymn identified numerous
reasonable and commonplace techniques that would be used by skilled and diligent
searchers to discover prior art references.

(See ECF No. 621-33 at 13–21.)

Throughout his opinion, Lhymn used clear language indicating the reasonableness
and probability of his methods. (See, e.g., id. at 23 (emphasis added) ("[A] skilled
searcher during the Timeframe could have readily identified [the prior art]."); id. at
48 (emphasis added) ("A skilled searcher could easily complete this search."); id. at
81 (emphasis added) ("Olympus is a well-known and prolific assignee in the
endoscope arts.").) These were not mere opinions of "possibility" as Defendants would
suggest; Lhymn provided an account of what a diligent searcher "reasonably could"
find, and that is all that is required.
Defendants take issue with the type of search terms, sources, claims, and
classifications used by Lhymn in support of his opinion, (see ECF No. 704 at 23–24),
but as the Court just discussed, Lhymn adequately considers reasonableness in his

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report as required by the standard; the report's level of persuasiveness is not at issue
at this stage. The Court will not exclude an entire expert opinion simply because the
opposing party disagrees with its conclusions or did not want to "waste resources"
deposing the expert. (Id. at 25.)
For the aforementioned reasons, the Court denies Defendants' Motion to
Preclude, (ECF No. 634), with regards to Mr. Lhymn's skilled searcher opinions.
C. Plaintiffs' Allegedly New "Link" Infringement Theory
Defendants next argue that Plaintiffs present a new and improper argument
about how the Accused Products meet the "link" limitation of claim 1 of the '048
patent. (ECF No. 636 at 21.) Specifically, Defendants argue that Plaintiffs, in their
summary judgment brief, assert that "the driver alone" constitutes claim 1's "link."
(Id. (emphasis in original); see also ECF No. 622 at 16–17.) The language Defendants
refer to from Plaintiffs' brief is the following: "The proximal end of the driver . . .
includes a socket formed by two driver legs, which is a link that couples the end of
the drive wire to the clip." (ECF No. 622 at 16.) Defendants argue that Plaintiffs'
previous contentions and expert report identified the "link" as being formed by the
"junction" or "coupling" of "both the drive wire and driver" rather than just the
driver alone. (ECF No. 636 at 22 (emphasis in original).)
Plaintiffs disagree, asserting that the infringement theory in their summary
judgment motion was disclosed both in their infringement contentions (2017 and
2021) and in Leinsing's infringement reports (2017 and 2022). (ECF No. 672 at 28-

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31.) They further argue that Defendants' contention is "belied by Nicosia's deposition
testimony." (Id. at 23.)
While Plaintiffs have perhaps been inconsistent in their theory throughout the
long pendency of this case—(compare, e.g., Pls.' Contentions, ECF No. 544-1 at 42
(emphasis added) ("The [Accused Product] has a link (e.g., the coupling of the distal
hook of the 'drive wire' and the 'driver legs' of the 'driver')."); Leinsing Report, ECF
No. 621-4 at 77 (emphasis added) ("This junction between the drive wire and proximal
end of the driver operates as a link.") with, e.g., ECF No. 621-4 at 101 (emphasis
added) ("Accordingly, the link (the proximal end of the driver) is not integral with the
control wire (drive wire) or the clip (jaws)."); ECF No. 544-1 at 48 ("Q: Is it correct for
me to say that the driver of the [Accused Product] links the drive wire . . . to the jaw
. . . prior to deployment of the clip? A: Yes."))—this does not rise to the level of a new
theory much less an ambush as Defendants allege. (See ECF No. 636 at 22 (citing
Rowe Int'l Corp. v. Ecast, Inc., 586 F. Supp. 2d 924, 934 (N.D. Ill. 2008)).) Indeed,
Defendants' own expert, Nicosia, noted the inconsistency: "[T]he term 'link' itself is
not very clear. . . . '[L]ink' has been applied as a junction between two components. .
. . Mr. Leinsing has applied it also as a structure. At least that's my understanding
of [Leinsing's] opinion, is that . . . the driver is the link, and then, in other places, the
link is the junction." (ECF No. 671-6 at 15–16.).
Defendants' frustration with Plaintiffs' sometimes confusing descriptions of "link"
aside, referring to the driver as the "link" by itself is not a "new" infringement theory.
In short, Defendants have not been ambushed by a new theory that they have not

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before encountered (indeed, their own expert at times interpreted Plaintiffs' theory
to designate the driver alone as the "link"). Accordingly, Defendants' Motion to
Preclude, (ECF No. 634), is denied as to Plaintiffs' new "link" infringement theory.
The Court will consider Plaintiffs' argument on this issue at the summary judgment
stage.
D. Summary
For the reasons discussed above, Defendants' Motion to Preclude, (ECF No. 634),
is granted in part and denied in part.
Defendants' Motion as to Leinsing's cumulativeness opinions is denied. The
Court will consider these opinions as part of the record when ruling on summary
judgment.
Defendants' Motion as to Lhymn's opinions concerning Defendants' state of mind
is granted. Any such opinions will not be considered on summary judgment.
Defendants' Motion with regards to Mr. Lhymn's skilled searcher opinions is
denied. The Court will consider these opinions as part of the record when ruling on
summary judgment.
Defendants' Motion as to Plaintiffs' new "link" infringement theory is denied.
The Court will consider Plaintiffs' argument on this issue.
III.

Motions for Summary Judgment

Plaintiffs and Defendants have both filed motions for summary judgment on
several issues including claim limitations. (ECF Nos. 620 & 630.) The Court will
address these issues and claim limitations in turn.

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A. Legal Standards
1. Summary Judgment
Summary judgment is appropriate "if the movant shows that there is no genuine
dispute as to any material fact and the movant is entitled to judgment as a matter of
law." Fed. R. Civ. P. 56(a). A dispute about a material fact is genuine only "if the
evidence is such that a reasonable jury could return a verdict" for the non-moving
party. Anderson v. Liberty Lobby, Inc., 477 U.S. 242, 248 (1986). If no reasonable
jury could find for the non-moving party, then there is no "genuine" dispute. Scott v.
Harris, 550 U.S. 372, 380 (2007). The Court views the evidence "in the light most
favorable to the non-moving party and draw[s] all reasonable inferences in that
party's favor." Zerante v. DeLuca, 555 F.3d 582, 584 (7th Cir. 2009) (citation omitted).
The Court need consider only materials cited by the Parties but may also consider
other materials in the record. Fed. R. Civ. P. 56(c)(3). "An infringement issue is
properly decided upon summary judgment when no reasonable jury could find that
every limitation recited in the properly construed claim either is or is not found in
the accused device either literally or under the doctrine of equivalents." Gart v.
Logitech, Inc., 254 F.3d 1334, 1339 (Fed. Cir. 2001). The Court may grant summary
judgment on each claim limitation independently of other limitations. Fed. R. Civ. P.
56(g); see also Riddell, Inc. v. Kranos Corp., 319 F. Supp. 3d 1071, 1088 (N.D. Ill.
2018) (granting summary judgment on some claim limitations but not others).
When reviewing cross-motions for summary judgment, all reasonable inferences
are drawn in favor of the party against whom the motion at issue was made. Valenti

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v. Lawson, 889 F.3d 427, 429 (7th Cir. 2018) (citing Tripp v. Scholz, 872 F.3d 857, 862
(7th Cir. 2017)).

The existence of cross-motions for summary judgment does not

imply that there are no genuine issues of material fact. R.J. Corman Derailment
Servs., LLC v. Int’l Union of Operating Engineers, Local Union 150, AFL-CIO, 335
F.3d 643, 647 (7th Cir. 2003).

The Court will consider each party's motion

individually to determine whether that party has satisfied the summary judgment
standard. Blow v. Bijora, Inc., 855 F.3d 793, 797 (7th Cir. 2017) (citing Celotex Corp.
v. Catrett, 477 U.S. 317, 324 (1986)).
2. Patent Infringement
The plaintiffs in a patent suit bear the burden of proving infringement by a
preponderance of the evidence. See Bayer AG v. Elan Pharm. Rsch. Corp., 212 F.3d
1241, 1247 (Fed. Cir. 2000). A patent can be infringed in two ways: either (1) literally
or (2) under the doctrine of equivalents. Id. "Literal infringement requires the
patentee to prove that the accused device contains each limitation of the asserted
claim." Id. (citation omitted). "If any claim limitation is absent from the accused
device, there is no literal infringement as a matter of law." Id. "If an asserted claim
does not literally read on an accused product, infringement may still occur under the
doctrine of equivalents if there is not a substantial difference between the limitations
of the claim and the accused product." Id. One way to determine equivalence is
through the function-way-result test, wherein the plaintiff would have to show that
the allegedly equivalent element in the accused device "'does substantially the same
thing in substantially the same way to get substantially the same result' as the claim

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limitation." Toro Co. v. White Consol. Indus., Inc., 266 F.3d 1367, 1370 (Fed. Cir.
2001) (citation omitted).
B. The '048 Patent
The Court begins with the '048 patent. The asserted claims of the '048 patent are
claims 3, 4, 7, and 14. Claims 3, 7 and 14 each depend from claim 1, the base claim,
of the '048 patent. Further, claim 4 depends from claim 3. Therefore, to infringe, the
Accused Products must first meet all claim limitations in claim 1. The Accused
Products will also need to meet the additional pertinent limitations found in the
asserted claims to find infringement of those respective claims.
1. Claim 1 (Unasserted Base Claim)
Claim 1 of the '048 patent is reproduced below, with the disputed limitations in
bold:
1. A medical device, comprising:
a clip having first and second clip legs;
a control wire being operable both to open the clip legs and to close
the clip legs;
a sheath enclosing the control wire;
a link coupling the control wire to the clip, the link being movable
from a coupled configuration in which the clip is coupled to a distal end
of the control wire to a released configuration in which first and
second arms of the link are configured to move radially outward
at an area of the sheath to release the control wire from the clip;
and
an actuator coupled to the control wire, the control wire engageable
by the actuator to move the control wire to open and close the clip legs
and to move the link from the coupled configuration to the released
configuration.
('048 Patent, ECF No. 451-2 at 38 (emphasis added).)

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i.

The disputed "sheath" limitation

Plaintiffs argue that the driver legs of the Accused Products are the claimed "link
arms" that move radially outward at an area of the sheath. (ECF No. 622 at 17.)
Both parties agree that "at an area of the sheath" means "within the lumen or wall
of the sheath." (ECF No. 68.) Defendants do not dispute that the driver legs expand
outward within the lumen of the Accused Products' "housing." (ECF No. 633 at 36.)
Rather, Defendants argue that the "housing" is not part of the "sheath." (Id.) Thus,
the Accused Products would not literally meet the claim limitation described in claim
1 (i.e., that the arms of the link move outward "at an area of the sheath"). The central
question, therefore, is whether the "housing" of the Accused Products is part of the
"sheath."
The District of Delaware, from where this case was transferred, construed
"sheath" to mean "one or more components of the delivery device that enclose the
control wire." (ECF No. 80 at 35 (emphasis added).) There is no doubt that the
Accused Products' "housing" encloses the control wire; but Defendants argue that the
housing is not a component of the delivery device, and thus, cannot be a part of the
"sheath." (ECF No. 633 at 37–38.) The Court agrees.
The undisputed facts indicate that the "housing" is not a component of the delivery
device and therefore not a part of the "sheath"; accordingly, the Court finds that claim
1 of the '048 patent is not literally infringed by the Accused Products. First, Plaintiffs'
own corporate designee, Kevin Wilcox, a Research and Development Engineer at
Boston Scientific tasked with studying the Accused Products and breaking them
apart to understand how they work, (ECF No. 632-8 at 5, 7), unequivocally stated
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that the "housing" (which he called a "capsule") was not a component of the delivery
device, (id. at 18). Plaintiffs' sole counterargument to this testimony is that their
corporate designee was a "lay witness" who was not shown the '048 patent or the
claim constructions and thus potentially used "other terminology." (ECF No. 679 at
30 (citing ECF No. 674-5 at 12).) But, as designated by Plaintiffs themselves, Wilcox
provided factual testimony on the structure and function of the Accused Products
based on what he learned in his role at Boston Scientific. See Teashot LLC v. Green
Mountain Coffee Roasters, Inc., 595 F. App'x 983, 986 (Fed. Cir. 2015) (affirming
summary judgment of no literal infringement because the plaintiff's admissions
showed that a claim limitation was not met in the accused product). Further, there
is no confusion with the "terminology" that Wilcox used. Wilcox labeled images of the
Instinct Plus indicating that his term, "capsule," clearly referred to the "housing."
(See ECF No. 632-16 at 2, 11.) And his testimony leaves no doubt that the capsule
"is not a component of the delivery system," which, by the Court's construction, it
would need to be if it were a component of the sheath. (ECF No. 632-8 at 18.)
Plaintiffs attempt to create a genuine dispute of fact by pointing to both their
expert's report and Defendants' expert's testimony. Plaintiffs cite generally to ten
pages of Leinsing's (Plaintiffs' expert) report in support of the assertion that the
housing is part of the "delivery device." (ECF No. 622 at 16 (citing ECF No. 621-4 at
22–32).) However, Plaintiffs do not point to any passage where Leinsing actually
states such an opinion. Upon examining Leinsing's opinion, the Court likewise fails
to see any affirmation from Leinsing that the housing is a component of the delivery

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device. Leinsing goes into considerable detail discussing how the coil spring, coil cath,
and cath attach are components of the delivery system. (See, e.g., ECF No. 621-4 at
28–29.) The housing is discussed in this section as well. (Id.) Because of this,
Plaintiffs argue that Leinsing is opining that the housing is another component of the
delivery system. This is not the case. To the extent that the housing is mentioned
by Leinsing with regards to the delivery system, it is only in reference to its
deployment from the cath attach; Plaintiffs themselves acknowledge this. (ECF No.
679 at 30 (citing to the record to show that the cath attach decouples from the housing
during deployment).) But this is not evidence that the housing is part of the delivery
system. The housing is designed to be left behind in the body with the clips; it
inevitably must decouple from the cath attach. But this does not mean that it is a
part of the delivery system comprised of the coil spring, coil cath, and cath attach (the
components "delivering" the housing and the clips). Importantly, the Court is not
saying that "the patents require the limitation that no part of the sheath may ever
remain with the clip at the target site." (See ECF No. 622 at 16 (citing ECF No. 80
at 32–35).) Portions of the sheath theoretically can remain behind in the body. The
housing is not a part of the sheath not because it remains in the body, but rather,
because Plaintiffs have not presented evidence that it is a component of the delivery
device, as is required by this Court's construction of "sheath." (ECF No. 80 at 35; see
also ECF No. 451-2 at 33 ('048 patent specification stating that the "delivery device .
. . can be removed while leaving the clip 101 (with lock sleeve 113) in place,"

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suggesting that the lock sleeve (which Plaintiffs later analogize to the Accused
Products' housing) is not part of the delivery device).)
Plaintiffs' reliance on Defendants' expert is likewise unpersuasive. Plaintiffs
argue that Defendants' expert, Nicosia, stated that a component "is part of the
delivery device . . . if it is involved in the function of delivering the clip." (ECF No.
679 at 30.) Of course, if this is true, then the housing is "involved" in delivering the
clips to a target site; after all, as discussed above, the cath attach deploys from the
housing (which is connected to the clip), leaving (i.e., "delivering") the housing and
clip to the target. However, this is not exactly what Nicosia stated. When asked to
define what is meant by a delivery component, Nicosia did not say that it was any
component involved in the delivering of a clip; instead, he stated that the component
would be involved with "[d]elivering the payload." (ECF No. 621-10 at 28 (emphasis
added).) This distinction is not trivial. As Defendants note, the housing is a part of
the payload. (ECF No. 706 at 15.) Logically, the housing cannot be involved in the
delivery of itself (otherwise, anything being delivered would also be a component of
its respective delivery device). Nicosia's testimony only further supports the Court's
conclusion that the undisputed facts show that the housing is part of what is
delivered; it is not itself a component of the delivery system and thus cannot be a part
of the sheath. (See also ECF No. 632-4 at 51–55 (Nicosia explaining and illustrating
in intricate detail the differences between the "delivery device" (comprised of the
handle, coil spring, coil cath, cath attach, and drive wire) and the housing/clip).)

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Because there is no literal infringement of this claim limitation, the Court next
examines whether there is a genuine dispute of fact as to infringement under the
doctrine of equivalents. The Court finds that such a dispute exists.
Defendants make several arguments attempting to show that no genuine dispute
exists as to whether the pertinent claim limitation is infringed under the doctrine of
equivalents. First, Defendants suggest that Plaintiffs have no equivalents analysis
on this limitation. (ECF No. 633 at 40.) That simply is not the case. Plaintiffs' expert,
Leinsing, extensively opined that the "housing" (along with the coil spring, coil cath,
and cath attach) of the Accused Products is not substantially different from the
claimed "sheath" and further stated that these components together perform
substantially the same function as the claimed sheath in substantially the same way.
(ECF No. 621-4 at 74–76.) Defendants respond that Plaintiffs have mischaracterized
their equivalents analysis; specifically, Defendants state that "Plaintiffs misidentify
the issue here as whether the Accused Products include an equivalent to a 'sheath.'"
(ECF No. 706 at 16.) But Plaintiffs do not simply search for any equivalent to the
sheath; rather, they assert that the housing is insubstantially different from other
components of the claimed sheath. (ECF No. 679 at 31.) This is significant because
the parties all agree that the driver legs of the Accused Products move radially
outward at an area of the housing. (ECF No. 633 at 19.) Thus, if the housing is
substantially the same as the sheath (and therefore an equivalent for infringement
purposes), then the legs of the Accused Products effectively move radially outward at
an area of the "sheath," as required by the patent claim. This is, in fact, exactly what

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Leinsing opines in his report. Leinsing states that "[t]he difference between the
claimed sheath and the Instinct's coil spring, coil cath, cath attach, and housing is
insubstantial." (ECF No. 621-4 at 74 (emphasis added).) Leinsing then breaks down
the three functions of the claimed sheath: (1) acting as a housing for the control wire,
(2) acting as a means for rotating the clip, and (3) acting as a component of the clip
release mechanism. (Id.) Finally, Leinsing explains why the coil spring, coil cath,
cath attach, and the housing of the Accused Products together perform each of these
same functions in substantially the same way to achieve substantially the same
result. (Id.; see also Toro, 266 F.3d at 1370.) This is Plaintiffs' central equivalents
analysis and argument. If Leinsing's expert opinion is credited, then even if the
housing is not literally a component of the sheath, it is substantially the same as the
sheath, acting in concert with the remaining sheath components, the coil spring, coil
cath, and cath attach, to achieve the same results in substantially the same way as
the claimed sheath. This would yield a conclusion that the link arms of the Accused
Products move radially outward "at an area of the sheath," in satisfaction of claim 1
of the '048 patent.
Defendants' reliance on Sage Products, Inc. v. Devon Industries, Inc., 126 F.3d
1420 (Fed. Cir. 1997), is not dispositive at this stage. (See ECF No. 706 at 16.) In
that case, the court affirmed a district court's finding that there was no infringement
under the doctrine of equivalents in part because the patent claims required a
"precise arrangement of structural elements that cooperate in a particular way to
achieve a certain result," and though the accused products in the case achieved

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similar results, they did so using a different arrangement of elements. Sage, 126 F.3d
at 1425. But the claims in Sage are not quite like the claims here. In Sage, the patent
claims provided specific positional directions for the different elements of the
invention. Namely, the elements at issue were claimed to be "at the top of the
container body" or "over" a particular slot. Id. at 1422 (emphasis added). The accused
products in that case were configured in a completely different order (e.g., the
pertinent elements were well within the container rather than on top) such that no
reasonable jury could possibly find the element to be equivalent to what was claimed.
Id. at 1424–25. The same is not true here. This is not a case of claim 1 of the '048
patent requiring a "precise arrangement of structural elements." Rather, the entirety
of the issue here is whether the housing of the Accused Products is an equivalent of
a sheath component such that the link arms that move radially outward within it
satisfy the pertinent claim. Leinsing's expert opinion, already discussed at length
above, serves as evidence in the record that the housing is indeed an equivalent to a
sheath component. In contrast, Defendants' expert, Nicosia, provided a report that
suggests the exact opposite.

(ECF No. 632-4 at 152 (discussing the substantial

difference of having arms move radially outward at an area of a delivery device as
opposed to an area not within a delivery device).) With this genuine factual dispute
in mind, the Court cannot rule for either party on whether the housing of the Accused
Products infringes claim 1 of the '048 patent under the doctrine of equivalents. See
Leggett & Platt, Inc. v. Hickory Springs Mfg. Co., 285 F.3d 1353, 1360 (Fed. Cir. 2002)
("Because infringement under the doctrine of equivalents often presents difficult

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factual determinations, a summary conclusion that a reasonable jury could not find
infringement is often illusive.").
ii.

The limitation of a link "to release the control wire from the clip"

Defendants' argument of no literal infringement on this claim limitation hinges
on whether the driver of the Accused Products is part of the "control wire" referred to
in the '048 patent. (See ECF No. 633 at 41–43.) Plaintiffs do not appear to dispute
that this inquiry is central to determining whether the Accused Products meet this
claim limitation. If the driver is a part of the control wire, then this claim limitation
cannot be met because the driver is not released from the clip; in other words, a
portion of the control wire (the driver) remains attached to the clip, in contrast to the
patent requiring a link "to release the control wire from the clip." Defendants argue
that the driver is part of the control wire. But, Plaintiffs identify solely the drive wire
as the control wire of the Accused Products; therefore, they argue, the claim
limitation is literally met because the driver (the "link") releases the drive wire (the
"control wire") from the clip. (ECF No. 679 at 32–33.) The Court finds that there is
no genuine dispute that the driver is not a part of the "control wire." Accordingly,
Plaintiffs are entitled to summary judgment that the Accused Products literally meet
this claim limitation.
The intrinsic evidence of the '048 patent makes it clear that the driver of the
Accused Products would meet the separate "link" limitation claimed in the patent,
rather than merely being a part of the separately claimed "control wire." Indeed, the
patent claims a separate structure, a link, that couples the control wire of the
invention to the clip. The link can be integral with the control wire, but it still must
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be a separate element. (See, e.g., ECF No. 451-2 at 4 (FIG. 1 depicting the control
wire 108 coupled to the clip 101 through a distinct though integral frangible link (jhook) 107); id. at 33 (stating at col. 6, ll. 29-30 that frangible link or "J-Hook 107 is
formed on the distal terminal end of control wire 108."). But cf. id. at 38 (claim 14
requiring that the link not be integral with the control wire).) The patent also
discloses an embodiment of the invention with a control wire that is analogous to the
drive wire of the Accused Products and where that control wire is coupled to the clip
via a separate link that is not integral with the control wire. (See ECF No. 451-2 at
30 (depicting the control wire 2104 coupled to the clip 2101 via a separate link 2105).)
The driver of the Accused Products includes the claimed link, which couples the drive
wire of the Accused Products to the clip as claimed; this means that the driver, while
related to the drive wire (which both parties agree is analogous to the control wire),
is not itself merely a part of the control wire. For the reasons that follow, Defendants'
arguments to the contrary are not persuasive.
First, Defendants argue that the '048 patent states that the control wire "acts as
a means of actuating the clip . . . between the open and closed position." (ECF No.
633 at 41 (citing ECF No. 451-2 at 33).) Therefore, the driver, which also helps acuate
the clip, must be a part of the control wire. (Id.) But the '048 patent is not defining
"control wire" as all components that actuate the clip. Rather, the patent simply
states that the control wire is a distinct component that has this function. Stated
differently, the control wire actuates the clip; but not all components that are involved
in actuating the clip are a control wire. Other elements of the invention can also play

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a role in actuating the clip without being labeled a part of the control wire. (See, e.g.,
ECF 451-2 at 33, 37 (describing the roles of various non-control wire components such
as the frangible link 107, the sheath 111, and the breakable link 2105 in actuating
the clips).) Additionally, Defendants urge that "a 'control wire' may be made up of 'a
two (or more) piece wire so that certain sections of the wire have different material
properties or geometries'". (ECF No. 451-2 at 37.) Thus, the argument goes, the
driver is part of the control wire and infringement cannot be found. Yes, the control
wire of the Accused Products can be made of different materials and geometries, but
this does not mean that the link (here, the driver), that couples the control wire to
the clip becomes part of the control wire simply because it is connected to the wire
and is made of a different material or geometry.
Second, Defendants argue that Plaintiffs are not credible because they define the
"control wire" one way when analyzing the '048 patent and another way when
analyzing the '371 patent. (ECF No. 706 at 17.) But this is not exactly true. As has
already been seen in the discussion on the Motion to Preclude, the parties engage in
some inconsistent and often confusing phrasing. However, the Court does not find
that Plaintiffs are inconsistently defining the "control wire" in their '371 analysis.
This is because Defendants' argument implicitly equates "control element" (used in
the '371 patent) with "control wire" (used in the '048 patent). Defendants argue that,
when analyzing the '371 patent, Plaintiffs define "control element" as the driver and
drive wire of the Accused Products, in contrast with how they define "control wire"
here (i.e., as only the drive wire). However, Defendants do not explain why "control

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element" in the '371 patent is necessarily equivalent to "control wire" in the '048
patent. The language of the '371 patent would actually suggest that "control element"
is a different limitation than "control wire." There, the patent claim, in relevant part,
reads "a control element including a connector element."

(ECF No. 451-4 at 40

(emphasis added).) Defendants' "a-ha" evidence comes from Plaintiffs' expert report,
wherein Leinsing states, "The control element of the Instinct includes the drive wire
and the driver." (ECF No. 621-4 at 172 (emphasis added).) Thus, Defendants argue,
because Plaintiffs have defined the "control element" as both the driver and drive
wire, they must also define "control wire" in this way. But "control element," by
definition, includes a secondary "connector element." The control wire in the '048
patent is not described in this way. (See generally ECF No. 451-2; see also ECF No.
679 at 25–26 ("[T]he distal end of the control element (drive wire) is removably
connected to the clip assembly via the connector element (driver), and the control
element (drive wire) detaches from the connector element (driver).").) The Court will
not equate "control element" of the '371 patent to the "control wire" of the '048 patent;
the fact that the driver may be the "connector element" that is included within the
"control element" of the '371 patent does not mean it is a part of the "control wire"
here.
Third, Defendants argue that Plaintiffs are "stuck" with the position they argued
during the IPR for the '731 patent.

Specifically, Defendants point to Plaintiffs'

arguments as to what constituted a "control wire" in the Sackier prior art. (ECF No.
706 at 16–17.) In that proceeding, Plaintiffs argued that the prior art did not disclose

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a clip coupled to a control wire via a separable link because shaft 158 is part of the
control wire and remains attached to the clip.

(ECF No. 631-12 at 41–42.)

Additionally, Plaintiffs stated that shaft 158 was part of the control wire in part
because it was "one of the structures involved in actuating the jaws." (Id. at 42.)
Defendants thus seem to think that Plaintiffs stated that shaft 158 (which is,
according to Defendants, analogous to the driver) "must be treated" as a part of the
control wire because it is involved in actuating the jaws. (ECF No. 706 at 17.)
Therefore, relying on Aylus Networks, Inc. v. Apple Inc., 856 F.3d 1353 (Fed. Cir.
2017), Defendants argue that Plaintiffs are stuck with this position from the IPR.
(ECF No. 706 at 16.) The Court cannot agree. In Aylus, the court rejected Aylus'
arguments that directly contradicted statements it had made to the Board during IPR
proceedings. Aylus, 856 F.3d at 1363. The court stated that Aylus' statements during
IPR were a "clear and unmistakable surrender of [claim] methods" that "represent an
unequivocal and unambiguous disavowal" of a particular claim construction. Id. This
is not the case here. Plaintiffs did not unequivocally state that the Accused Products'
driver is a part of the control wire; their argument pertained to the shaft 158 of the
Sackier prior art during an IPR proceeding on a separate claim of a separate patent.
Further, even within this argument, Plaintiffs did not unequivocally state that shaft
158 is part of the control wire solely because it is involved in actuating the jaws.
Rather, Plaintiffs argued that shaft 158 acts as an "extension" of the inner shaft 58a
when the clamp applier engages the clamp. (ECF No. 631-13 at 24, 50.) The intrinsic
evidence of the '048 patent is the most pertinent evidence here, and as discussed

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above, a component is not automatically a "control wire" simply because it may help
actuate the clip legs. Thus, while Defendants describe shaft 158 as an analog to the
Accused Products' driver, (ECF No. 633 at 42), the Court is not convinced this is the
case. The driver has additional functional and structural features (besides actuating
the jaws) as compared to both shaft 158 and the drive wire, rendering it as not a mere
"extension" of the drive wire. For instance, the driver has legs that lock the clip in a
closed configuration, central ribs that engage teeth at the proximal end of the clip
legs to help the clip open and close, and an end portion that couples a nitinol strip
that acts as a spring to return the clip to an open position. (ECF No. 621-4 at 14–20,
37–45; see also ECF No. 621-10 at 23 (Nicosia conceding that the drive wire is part of
the delivery device while the driver is not); ECF No. 633 at 18 (Defendants describing
the role of the driver ribs in engaging the proximal end of the jaws to form a rackand-pinion mechanism).) These are all functions that are not performed by the drive
wire of the Accused Products nor by the shaft 158. Nor does it appear, aside from its
position on the device, that the shaft 158 is structurally equivalent to the driver. This
is not to say that the driver has to have identical functions to the drive wire in order
to be considered part of the control wire, but Defendants have not described in any
detail why the driver is a direct analog to the shaft 158 of the Sackier prior art. And
even if they had done so, the Court does not read Plaintiffs' argument as an
unequivocal concession that any component that remains attached to the clip and
that helps actuate the clip legs is automatically deemed a part of the control wire.

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In summary, the Court grants Plaintiffs' summary judgment motion as to
whether the Accused Products literally contain the '048 patent claim 1 limitation
requiring a link to "release the control wire from the clip." The driver is the "link" of
the Accused Products, and it is distinct from the "control wire." The control wire (the
drive wire) is therefore fully released from the clip, as required by the patent.
2. Claims 3 and 4 (Asserted Claims)
Defendants present the same argument as to why their Accused Products do not
infringe claims 3 and 4 of the '048 patent. The Court therefore will analyze both
claims concurrently.
Claim 3 reads "The medical device of claim 1, further comprising a lock sleeve
surrounding a part of the clip so that, as the clip is drawn proximally thereinto, the
clip legs are drawn toward one another, wherein the lock sleeve radially surrounds
part of the first and second clip legs." (ECF No. 451-2 at 38 (emphasis added).) Claim
4 depends from claim 3. (Id.) Plaintiffs identify the housing of the Accused Products
as the "lock sleeve" limitation in claims 3 and 4. (ECF No. 622 at 18–19.) In response,
Defendants make a single argument as to why their Accused Products cannot infringe
claims 3 and 4 as a matter of law. Namely, Defendants argue that, if the housing is
to be considered part of the "sheath" (in order to satisfy the "at an area of the sheath"
limitation of claim 1 discussed previously), the housing cannot also be the "lock
sleeve." (ECF No. 633 at 44.) The Court agrees with Defendants. As analyzed in the
section discussing claim 1, there is no genuine dispute of fact as to whether the
housing of the Accused Products literally infringes claim 1 of the '048 patent because

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the housing is not a part of the delivery device and thus is not a literal component of
the sheath. Therefore, as Plaintiffs alternatively argued, for claim 1 to be infringed,
the housing would need to be deemed an equivalent of a component of the sheath to
satisfy the claim limitation. (See ECF No. 679 at 31 (stating Plaintiffs' equivalents
argument for claim 1).) The Court found there was a genuine dispute of fact as to
whether the housing constituted such an equivalent. Thus, if the finder of fact deems
the housing as an equivalent of the sheath under a doctrine of equivalents theory,
Defendants argue that there would still be no infringement of claims 3 and 4 because
there is no dispute of fact that the housing is not also the lock sleeve as required by
the claims.
There is a presumption that "[w]here a claim lists elements separately, 'the clear
implication of the claim language' is that those elements are 'distinct component[s]'
of the patented invention." Becton, Dickinson & Co. v. Tyco Healthcare Grp., LP, 616
F.3d 1249, 1254 (Fed. Cir. 2010) (quoting Gaus v. Conair Corp., 363 F.3d 1284, 1288
(Fed. Cir. 2004); see Kyocera Senco Indus. Tools Inc. v. Int'l Trade Comm'n, 22 F.4th
1369, 1382 (Fed. Cir. 2022) (citing Becton as support for a presumption that
separately listed elements are distinct components from one another). Claim 3 in this
case (from which claim 4 depends), unequivocally lists a "lock sleeve" as a separate
element of the invention. (ECF No. 451-2 at 38 (emphasis added) ("The medical
device of claim 1, further comprising a lock sleeve.").) Therefore, there is a
presumption that the lock sleeve is a distinct component (and therefore separate from
the distinctly listed sheath); Plaintiffs' arguments fail to overcome this presumption.

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Plaintiffs first argue that "further comprising" is "merely an open-ended
transitional phrase indicating that the dependent claim includes additional
limitations." (ECF No. 679 at 34.) Exactly right. The additional limitation in this
case, a "lock sleeve," is listed separately from the other elements of the medical device;
therefore, the Court presumes it is a distinct component of the device. Plaintiffs state
that the use of this phrase "does not compel the conclusion that the housing may not
be both the lock sleeve and part of the sheath," (id. (emphasis added)), but the law
presumes that the two components are distinct from one another.
Plaintiffs next try to distinguish the cases relied on by Defendants, namely, Becton
and Engel Indus., Inc. v. Lockformer Co., 96 F.3d 1398 (Fed. Cir. 1996). (ECF No. 679
at 34.) In Becton, the pertinent claims were "a hinged arm" and "spring means
connected to said hinged arm." Becton, 616 F.3d at 1254. The Federal Circuit held
that the "hinged arm" had to be distinct from the "spring means" in part because the
alternative would be a physical impossibility; in other words, the hinged arm would
have to be connected to itself. Id. at 1255. Plaintiffs rely on this reasoning in
distinguishing their case because it would not be impossible for the sheath and the
lock sleeve to be the same component. But this is not a rule. Just because two
elements could possibly be represented by the same structural component, does not
mean this is enough to overcome the Becton presumption that separately listed
elements are distinct components from one another. The principal analysis requires
reliance on the language of the patent claims and specification. This is in fact what
the court in Becton first did. Id. at 1254–55 (discussing that the patent specification

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confirms that the "spring means" is a separate element from the "hinged arm" and
that the only elements disclosed in the specification as "spring means" are separate
structures from the "hinged arm").

Simply put, the fact that it would not be

"physically impossible" for the lock sleeve and sheath to be the same component does
not mean that the Plaintiffs have overcome the clear presumption, based on the
language of the claims and the patent specification, that they are in fact separate
components.
Plaintiffs' attempted distinguishing of Engel is likewise unpersuasive. In Engel,
the Federal Circuit held that the claimed "second portion" and "return portion" of a
duct could not be the same component because the "second portion" was described in
the specification as "bent rearwardly" whereas the "return portion" was described as
"bent forwardly." Engel, 96 F.3d at 1405. Again, Plaintiffs are implying that the
specification must make it physically impossible for two elements to be represented
by the same component in order for the element to be viewed as distinct. (See ECF
No. 679 at 34.) But again, this is not how the presumption operates, and Plaintiffs
seem to know it. Plaintiffs state that in Engel, "[t]here was also substantial intrinsic
evidence supporting a construction of separate and distinct elements." (Id. (citing
Engel, 96 F.3d at 1405).) Plaintiffs think this is a distinguishing feature from their
case, but this argument is wrong. Actually, the intrinsic evidence found in the '048
patent only shows the lock sleeve as a separate and distinct component from the
sheath. First, the Court has already noted that the patent claim lists the lock sleeve
as an additional separate limitation of the "medical device of claim 1" (which had

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already included a distinct sheath). (ECF No. 451-2 at 38.) Further, the specification
consistently shows and describes the lock sleeve as separate from the sheath. (See,
e.g., id. at 34 (describing the lock sleeve as a separate component); id at 4 (showing
lock sleeve 113 in Figure 1 as a separate component from sheath 111); id. at 7
(showing a blown-up image of the lock sleeve 113 on its own as an individual
component); id at 37 (describing an embodiment in Figure 21 where the lock sleeve
is eliminated and therefore the sheath would have to deploy from another
component).) The Court has not found, nor have Plaintiffs pointed to any, intrinsic
evidence in the '048 patent that would suggest that the lock sleeve and sheath are (or
can be) the same component of the invention. The only evidence that Plaintiffs point
to in support is this Court's claim construction of "sheath," wherein the Court defined
"sheath" as "one or more components of the delivery device that enclose the control
wire." (ECF No. 80 at 35.) But this evidence is not on point. Yes, the sheath can
include more than one component of the delivery device. As discussed previously, the
Court acknowledges that the facts not in dispute show that the Accused Products' coil
cath, cath attach, and coil spring are all part of the sheath. But this does not show
that the lock sleeve is (or even can be) a component of the sheath. Plaintiffs have
introduced no evidence to suggest that the lock sleeve is a component of the delivery
device (in order for the lock sleeve to qualify under the definition for "sheath").
Moreover, "lock sleeve" is different from other potential components of the sheath
(like the coil cath and cath attach) because it is a separately listed element in the
patent claim. Plaintiffs have simply not overcome the Becton presumption.

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Plaintiffs' reliance on Powell v. Home Depot U.S.A., Inc., 663 F.3d 1221 (Fed. Cir.
2011), also falls short. Plaintiffs claim that "it is black-letter law that a single
element (housing) can satisfy two claim limitations (sheath and lock sleeve)." (ECF
No. 622 at 19.) But as already discussed at length, that is not the law, and Powell is
consistent with this Court's understanding of the law. In Powell, the plaintiff was
able to overcome the Becton presumption, which the Powell court duly cited at the
start of its analysis. Powell, 663 F.3d at 1231. Specifically, the Federal Circuit
referenced numerous pieces of intrinsic evidence from the specification of the relevant
patent showing that the pertinent claim elements could indeed be represented by the
same structural component. Id. at 1231–32; see also id. (distinguishing Becton by
stating that the claim language in that case did not suggest that the two elements
could be the same structure). The intrinsic evidence in this case makes no suggestion
whatsoever that the lock sleeve and sheath can be the same structure. Accordingly,
Plaintiffs have not overcome the Becton presumption.
For the aforementioned reasons, even if the housing is deemed an equivalent of a
component of the sheath (in order satisfy claim 1 of the '048 patent), there is no
genuine dispute of fact that the Accused Products do not contain separate structures
corresponding to the claimed housing and the claimed lock sleeve respectively, and
thus, as a matter of law, the housing is not also the lock sleeve of asserted claims 3
and 4. Therefore, the Court finds that Defendants are entitled to summary judgment
on literal infringement of claims 3 and 4 of the '048 patent as a matter of law.

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The Court likewise finds that there is no genuine dispute of fact as to infringement
of claims 3 and 4 under the doctrine of equivalents. "[A]n element of an accused
product or process is not, as a matter of law, equivalent to a limitation of the claimed
invention if such a finding would entirely vitiate the limitation." Freedman Seating
Co. v. Am. Seating Co., 420 F.3d 1350, 1358 (Fed. Cir. 2005). Defendants argue that
allowing "lock sleeve" to be a component of the "sheath" would render the "lock sleeve"
limitation meaningless. (ECF No. 633 at 46.) The Court agrees, and Plaintiffs do not
dispute this argument.
Defendants also argue that Plaintiffs cannot dispute that there is no infringement
under the doctrine of equivalents for claim 4 because of prosecution history estoppel.
(Id.) Specifically, Defendants point to the amendments Plaintiffs made to claim 49 of
their '494 application (an identical claim to claim 4 of the '048 patent). (Id.) There,
Plaintiffs initially had a claim identical to claim 4, except that rather than claim a
"lock sleeve," the limitation pertained to the "sheath." (ECF No. 632-7 at 17–18.)
After having the claim rejected, Plaintiffs amended the claim by adding a "lock sleeve"
limitation such that the claim became identical to claim 4 of the '048 patent.
Plaintiffs are therefore estopped from arguing that the housing, an equivalent of a
sheath component, is also an equivalent of the lock sleeve. See Festo Corp. v. Shoketsu
Kinzoku Kogyo Kabushiki Co., Ltd., 344 F.3d 1359, 1366–67 (Fed. Cir. 2003)
(discussing estoppel of arguing equivalents when plaintiff had amended a claim to
narrow its scope in the prosecution history).

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Therefore, the Court grants Defendants' summary judgment motion for
noninfringement of claims 3 and 4 of the '048 patent as to both literal infringement
and infringement under the doctrine of equivalents.
3. Claim 7 (Asserted Claim)
Claim 7, which depends from claim 1, adds the limitation "wherein the clip legs
are separated from one another by a spring member positioned therebetween
and biased to urge the first and second clip legs away from one another." (ECF No.
451-2 at 38 (emphasis added).) Plaintiffs identified the nitinol strip of the Accused
Products as the "spring member." (ECF No. 622 at 20–21; see also ECF No. 621-4 at
95–100.)

Defendants argue that this claim limitation recites three distinct

requirements for the "spring member": it must (1) separate the clip legs, (2) be
positioned between the clip legs, and (3) urge the clip legs away from one another.
(ECF No. 633 at 46.) Plaintiffs do not dispute that the claim 7 limitation has the
second and third requirements, and Defendants concede that the nitinol strip meets
these requirements; thus, the parties only dispute the first "requirement," if such a
requirement exists at all. (ECF No. 679 at 35; ECF No. 706 at 20.)
Plaintiffs and Defendants disagree about what it means for a spring member to
"separate the clip legs from one another." There is no genuine dispute of fact as to
the basic properties of the nitinol strip nor as to the location of the strip on the
Accused Products. The real issue here is a question of law pertaining to claim
construction. Tempo Lighting, Inc. v. Tivoli, LLC, 742 F.3d 973, 977 (Fed. Cir. 2014)
("Claim construction is a question of law."). Defendants argue that the clip legs are

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not separated by the nitinol strip; rather, they are separated by the driver. (ECF No.
633 at 46.) Specifically, Defendants argue that the "separated" requirement means
that the clip legs must be "spaced apart from one another." (ECF No. 633 at 46; see
also ECF No. 632-4 at 173 (Nicosia opining that, based on the patent claim language,
"[t]he 'separated' requirement refers to the use of the spring member to separate the
'clip legs' in space from one another").) Plaintiffs argue that no "spaced apart from
one another" requirement exists. (ECF No. 679 at 35.) The Court agrees with
Plaintiffs.
Defendants and their expert, Nicosia, attempt to create a dispute as to the
meaning of "separate" through clever argument. But "[t]he words of a claim are
generally given their ordinary and customary meaning as understood by a person of
ordinary skill in the art when read in the context of the specification and prosecution
history." SkinMedica, Inc. v. Histogen Inc., 727 F.3d 1187, 1195 (Fed. Cir. 2013)
(emphasis added). While extrinsic evidence can be useful in deciphering the meaning
of claim terms, "[e]xpert testimony, in particular, is less reliable because it 'is
generated at the time of and for the purpose of litigation and thus can suffer from
bias that is not present in intrinsic evidence.'"

Id. (citation omitted); see also

Hockerson-Halberstadt, Inc. v. Converse Inc., 183 F.3d 1369, 1374 (Fed. Cir. 1999)
("Proper claim construction . . . demands interpretation of the entire claim in context,
not a single element in isolation.").
In this case, Defendants and Nicosia argue that "separate" must require the spring
member to "space apart" the clip legs from one another because claim 7 has two

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additional requirements (namely, (1) that the spring member be "positioned
therebetween" the clip legs, and (2) that the spring member is "biased to urge the first
and second clip legs away from one another") and the "separated from one another"
clause must therefore mean something different than those limitations; therefore,
Defendants conclude, the only explanation is that "separated from" requires the clip
legs to be "spaced apart" from one another. (ECF No. 706 at 20; ECF No. 632-4 at
173.) But Defendants' argument is unconvincing. First, Defendants point to no
evidence in the specification or prosecution history that suggests the spring member
must "space apart" the clip legs from one another, other than through the biasing
action, which is a separate requirement. In examining the '048 patent specification
and figures, the Court likewise is unable to find any teaching of a "gap" or "space"
between the clip legs. (See generally ECF No. 451-2; see id. at 4–5 (Figures 1 and 2
showing an embodiment of the invention where the clip legs are separated from one
another at the distal end, but still in contact, not "spaced apart," at the proximal end);
id. at 16 (Figures 10A and 10B showing an embodiment with a flexible linkage 1002
between the clip legs, but where the clip legs are not "spaced apart" at the proximal
end regardless of whether the clip is open or closed).) Second, Defendants' and
Nicosia's reliance on the claim language is also unpersuasive. The Court does not
read "wherein the clip legs are separated from" as a distinct claim limitation for the
spring member. Claim 7, interpreted within its ordinary meaning (as was correctly
done by Leinsing in his report, (see ECF No. 621-4 at 95–100)), clearly indicates that
the spring member separates the clip legs from one another (1) by being positioned

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therebetween the clip legs and (2) by urging the clip legs away from one another. It
seems quite clear to the Court that there is no distinct "separation" requirement;
rather, the positioning of the spring member therebetween, which alone is enough to
separate the clip legs, as well as its function of urging the clip legs away from one
another, "separates" the clip legs. Cf. Multimatic, Inc. v. Edscha Auto. Mich., Inc.,
19-12598, 2020 WL 6054693, at *6 (E.D. Mich. Oct. 14, 2020) (differentiating between
brackets that are "separate" but still in contact as compared to brackets that are
"spaced apart" with a "gap in between").
The Court finds that there is no genuine dispute of fact on this claim limitation.
As Defendants concede, the nitinol strip is the spring member of the Accused
Products, it is positioned in between the clip legs, and it is biased to urge the first and
second clip legs away from one another. (ECF No. 621-17 at 71 (Nicosia, on a separate
issue, admitting that the nitinol strip applies an outward force on the clip legs); see
also ECF No. 621-10 at 37; ECF No. 621-24 at 24 (Defendants' documentation
indicating that the nitinol strips ensure clip opening).) Thus, based on the '048 patent
specification and the ordinary meaning of the terms in claim 7, there is no dispute
that the nitinol strip "separates" the clip legs from one another by being positioned
in between the legs to urge them away from one another. Accordingly, the Accused
Products literally infringe the limitation added in dependent claim 7 of the '048
patent; Plaintiffs are entitled to summary judgment as to this claim limitation.
Plaintiffs' Motion, (ECF No. 620), is granted to this extent, with ultimate

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infringement of the claim falling to the jury's determination regarding the doctrine of
equivalents issue.
4. Claim 14 (Asserted Claim)
Claim 14, which depends from claim 1, requires that "the link is not formed
integrally with the control wire or the clip." (ECF No. 452-1 at 38.) As discussed
previously, Plaintiffs have identified the driver of the Accused Products as the "link"
that couples the drive wire (the "control wire") to the clip. (ECF No. 622 at 21.) There
is no dispute that the driver is not integral with the drive wire. (ECF No. 621-10 at
54–55 (Nicosia conceding that the driver is not integral with the drive wire).) Instead,
Defendants essentially have two arguments in support of a finding of no infringement
here. Defendants' first argument can be resolved expeditiously. Defendants again
rely on their argument that the driver is part of the control wire, and therefore, if the
driver is the "link," then it actually is formed "integrally" with the control wire. (ECF
No. 706 at 21.) For the reasons discussed above in Section III.B.1.ii., the Court finds
that the driver is not part of the control wire; this argument therefore is rejected.
In the alternative, Defendants' second argument involves the identification of the
"link."

Defendants argue that the driver cannot be the link because Plaintiffs

themselves identify the link as another component of the Accused Products. (ECF
No. 633 at 42–43.) This has also already been briefly discussed regarding the Motion
to Preclude, where the Court found that Plaintiffs did not present an untimely and
new theory of infringement at the summary judgment stage. (See supra Section II.C.)
To reiterate, Defendants contend that rather than identifying the driver as the "link"

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of the Accused Products, Plaintiffs identify the "coupling or junction of the driver and
drive wire" as said "link." (Id.) Thus, they argue, even if the driver is not a control
wire, the link would at least still partially be "integral" with the control wire because
the drive wire (which all parties agree is a control wire) is part of the link. (ECF No.
633 at 47.) The Court cannot agree with this interpretation, and finds that no
reasonable jury would agree with this interpretation either.
There is no genuine dispute as to the role of the driver of the Accused Products.
The driver is the link that couples the control wire (the drive wire) to the clip. The
"link" referenced in the '048 patent "reads on the accused product exactly." See
Jeneric/Pentron, Inc. v. Dillon Co., Inc., 205 F.3d 1377, 1382 (Fed. Cir. 2000)
(discussing literal infringement).

As has been analyzed at length, the intrinsic

evidence of the patent makes clear that the "link" is a separate element that couples
the control wire of the invention to the clip. (See ECF No. 451-2 at 4 (depicting the
control wire 108 coupled to the clip 101 through a distinct frangible link (j-hook) 107);
id. at 33 (discussing the role of the frangible link (j-hook) 107 in coupling the control
wire 108 to the clip 101).) In fact, there is a presumption that the link is a separate
component of the invention because the patent claim lists the link as a distinct
element. Kyocera, 22 F.4th at 1382 (citing Becton for the presumption). This is the
very same presumption that Defendants rely on to argue that the "lock sleeve" must
be a separate structure from the sheath. (See supra Section III.B.2.) The Court
agreed with Defendants there, and the same rule applies here. The "link" of claim 14
references the "link" originally discussed in claim 1, wherein it was listed as a distinct

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element of the claim. (ECF No. 451-2 at 38.) The driver of the Accused Products, as
identified by Plaintiffs, is the distinct structural component that serves as the "link"
of the products.
Plaintiffs do not identify the "link" as the "coupling or junction of the driver and
drive wire." Plaintiffs could have been more precise in their analysis. For example,
in certain portions of their infringement contentions, Plaintiffs state that the Accused
Products have a "link (e.g., the coupling of the distal hook of the 'drive wire' and the
'driver legs' of the 'driver') coupling the control wire (e.g., 'drive wire') to the clip (e.g.,
'jaws')." (See, e.g., ECF No. 544-1 at 42.) In Plaintiffs' expert report, similar language
is used by Leinsing. (See, e.g., ECF No. 621-4 at 77 ("This junction between the drive
wire and proximal end of the driver operates as a link that couples the drive wire to
the jaws.").)

But this language does not create a genuine dispute as to what

component of the Accused Products the '048 patent's "link" limitation reads upon.
The proximal end of the distinct driver couples the drive wire to the clip, acting as
the "link" referenced in the '048 patent is meant to do. Furthermore, Plaintiffs do
correctly identify the driver as the "link," and based on their arguments in other
sections, the only rational component of the Accused Products that serves as the
"link" is the driver. For example, in the very same infringement contentions on which
Defendants rely, Plaintiffs point to deposition testimony unequivocally identifying
the driver as the "link." (ECF No. 544-1 at 48.) And when discussing the "arms of
the link" that "move radially outward at an area of the sheath," Plaintiffs identify
and analyze the "'driver legs' of the 'driver'" as the pertinent components of the

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Accused Products. (Id. at 58.) Leinsing likewise consistently referred to the driver
of the Accused Products as the "link." (ECF No. 621-4 at 101 ("[T]he link (the
proximal end of the driver) is not integral with the control wire (drive wire) or the
clip (jaws)."); id. at 144 (same); see also id. at 77 ("[T]he drive wire couples to the clip
legs by way of the socket formed by the driver legs."); ECF No. 671-6 at 15–16 (Nicosia
interpreting Leinsing's report, at least in part, as referring to the driver as the
"link").)
The intrinsic evidence of the '048 patent makes it clear what the "link" element
entails. There is no genuine dispute that the "link" of the '048 patent reads directly
onto the driver of the Accused Products. The parties agree that the driver is not
integral with the drive wire. Accordingly, this claim limitation of claim 14 is literally
infringed. Plaintiffs' Motion for Summary Judgment is granted to this extent, with
ultimate infringement of the claim hinging on the jury's determination regarding the
doctrine of equivalents issue.
C. Infringement of the '371 Patent
The Court next examines the '371 patent. The lone asserted claim of the '371
patent is claim 13. Claim 13 depends from claim 11 of the patent. As before, the
Court finds the claim limitations to which Defendants present no argument to be
literally met by the Accused Products as also asserted by the Plaintiffs. (See, e.g.,
ECF No. 622 at 21–22 (discussing literal infringement of uncontested claim
limitations and citing to the record in support).) The Court therefore addresses the
claim limitations in dispute.

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1. Claim 11 (Unasserted Base Claim)
Claim 11 states the following:
An apparatus for applying clips to tissue within a living body,
comprising:
a capsule;
a clip assembly housed within the capsule for movement between an
insertion configuration in which first and second arms of the clip
assembly are drawn toward one another and an expanded configuration
in which the first and second arms are separated from one another to
receive tissue therebetween;
a control element including a connector element, extending
between a proximal end which, during use, remains outside the body
accessible to a user and a distal end removably connected to the
clip assembly via the connector element, wherein the control
element detaches from the connector element via a frangible link; and
a sheath extending from a proximal to a distal end and covering a
portion of the control element, wherein the distal end of the sheath is
releasably coupled to the capsule.
(ECF No. 451-4 at 40 (emphasis added).)

The language in bold is the central

limitation in dispute between Plaintiffs and Defendants. Plaintiffs identify the "drive
wire plus driver" of the Accused Products as the "control element including a
connector element," where the drive wire is the "control element" and the driver is
the "connector element." (ECF No. 679 at 25.) There is no dispute that the claim
requires the control element to detach from the connector element via a frangible
link, and Defendants do not dispute that the drive wire of the Accused Products
detaches from the driver via a frangible link, as required by the claim. (ECF No. 633
at 32.) Rather, the issue here is whether the claim also requires the connector
element to detach from the clip assembly. (Id. at 33.) Despite Plaintiffs' arguments
to the contrary, there is such a requirement.

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There is no dispute that the driver (the connector element) of the Accused Products
is not detachable from the clip assembly; thus, if the claim indeed requires the
connector element to detach from the clip assembly, the Accused Products cannot
literally infringe the patent. For the following reasons, the Court holds that in light
of the claim, the specification, and Plaintiffs' own unequivocal statements during the
pertinent IPR proceeding, claim 11 of the '371 patent requires that the connector
element be detachable, or "removably connected" to, the clip assembly. (See ECF No.
631-1 at 18 (noting that "releasably coupled" and "removably connected" both mean
the same thing, namely, "coupled and capable of being released/removed within the
body").) Because there is no dispute that the driver of the Accused Products is not
removably connected to the clip assembly, the Court finds that the Accused Products
do not meet this claim limitation of claim 11 and therefore do not literally infringe
the sole asserted claim of the '371 patent, claim 13, which depends from claim 11.
The Court first looks to the claim language in light of the specification. The claim
here distinctly lists a "a control element including a connector element." "As a
patent law term of art, 'includes' means 'comprising.'" SanDisk Corp. v. Memorex
Prods., Inc., 415 F.3d 1278, 1284 (Fed. Cir. 2005). Thus, the connector element is a
subpart of the control element. Plaintiffs do not disagree with this construction. (See
ECF No. 622 at 23 (arguing that the connector element is not separate and distinct
from the control element because the control element "includes" a connector
element).) As the District of Delaware properly construed, the control element and
connector element do not need to be a single, unitary structure. (See ECF No. 80 at

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35 (stating that "a control element including a connector element" should be afforded
its plain and ordinary meaning and that the two elements did not need to be a single
structure).) No doubt, these elements ultimately separate from one another, as the
'371 patent discloses. But the connector element is a subpart of the control element
based on the plain and ordinary meaning of the claim term, "including." It would
stand to reason then, that the "proximal end" and "distal end" limitations apply to
the distinctly listed "control element including a connector element" of the claim. The
"distal end" limitation states that the distal end of the "control element including a
connector element" must be "removably connected to the clip assembly via the
connector element." In the Accused Products, the distal end of the "control element
including a connector element" would have to logically be the distal end of the "drive
wire plus driver," which is, in effect, the distal end of the driver. (ECF No. 632-4 at
229 (discussing the fact that the driver does not separate from the clip assembly,
which Plaintiffs do not dispute); see also ECF No. 621-4 at 94 (image of the Accused
Products wherein it is clear that the driver is the distal end of the "drive wire plus
driver").) This distal end (the driver) does not detach from the clip assembly and
therefore does not literally infringe the claim.
Plaintiffs contend that this interpretation is incorrect. Plaintiffs argue that the
claim only requires the "control element to detach from the clip assembly, not
necessarily the connector element." (ECF No. 679 at 26.) Plaintiffs' interpretation is
that the "distal end," which is "removably connected to the clip assembly via the
connector element," refers to the distal end of the control element only, and the

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control element is what is removably connected to the clip assembly through the
connector element. (ECF No. 679 at 26.) Thus, the argument goes, the drive wire
(the control element) is removably connected to the clip assembly via the driver (the
connector element) as is required by the claim. (Id.) But the language of the claim,
as Plaintiffs themselves noted, states that the control element includes the connector
element, and this entire phrase is the separately listed element of the invention, set
off from its pertinent "distal end" limitation. See Kyocera, 22 F.4th at 1382 (citing
Becton for the presumption that separately listed elements are distinct components).
Thus, until such time as the connector element detaches from the control element via
the separately recited limitation of a frangible link, these two elements share the
recited distal end.
Additionally, and perhaps more convincingly, the specification of the '371 patent
supports the Court's interpretation.

To understand the evidence within the

specification in context, it is important to first be familiar with two additional terms:
(1) the "yoke" and (2) the "tension member." Plaintiffs, when analyzing dependent
claim 13 (which additionally requires a "yoke"), identified a portion of the Accused
Products' driver as the "yoke." (ECF No. 679 at 27 (identifying the proximal portion
of the driver as the "yoke"); id. at 28 (Plaintiffs stating that "the Delaware Court
[where this case was transferred from] already held that the specification describes
an embodiment in which the yoke is part of the connector element).) This is key
because while "connector element" and "control element" is not language used in the
specification, the "yoke" which Plaintiffs identify as a portion of the driver (the

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connector element), is discussed throughout the disclosure. Additionally, the "tension
member" is a component of the clip assembly located at the base of the clip legs. (See
ECF No. 451-4 at 11 (depicting the tension member 206); id. at 35 (discussing how
the clip arms go "over the tension member"); id. at 34–35 (identifying the tension
member as a component of the clip assembly); id. at 35 (explaining that the operator
can "fully deploy the clip" by adding pressure to "separate the yoke 204 from the
tension member 206).) Thus, if a component is detaching from the tension member,
it is, by definition, detaching from the base of the clip legs.
With these terms in mind, the Court can turn to the language and disclosure of
the '371 patent. The entirety of the '371 patent consistently emphasizes the multistage deployment of the invention as a distinction of the invention over the prior art.
In the very first section summarizing the invention, the patent discloses that the yoke
is "releasably coupled to the tension member." (ECF No. 451-4 at 32 (emphasis
added).)

Importantly, the yoke is also separately detachable from the control

element. (Id. (discussing the yoke having a cavity that receives the ball connector of
the control element).) The limitations of the asserted claim 13 as disclosed in the
specification read directly on the Accused Products' components. The driver, which
the Plaintiffs call the connector element and which they state also includes the yoke,
has a socket that accepts the distal hook of the drive wire (which Plaintiffs call the
control element), much like the disclosed yoke accepts the ball connector of the control
element. The Accused Products' yoke, represented by a portion of the driver, must
then also be "releasably coupled" to the clip, just as the disclosed yoke is releasably

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coupled to the tension member (which as discussed, is at the base of the clip legs).
(See id. at 36 (discussing Figure 24 which depicts the condition where the yoke is no
longer connected to the base of the clip legs nor connected to the control element)).)
This feature of the invention is reiterated throughout the '371 specification. (See, e.g.,
id. at 35 (explaining the process wherein the clip is deployed by separating the yoke
from the tension member); id. at 32 (stating that the control element is frangible so
that it can detach the yoke from the delivery device to provide a second user
feedback, and wherein the release of the yoke from the tension member (i.e.,
the base of the clip) provides a third user feedback). Compare id. at 9 (Figures
9 and 10 displaying an embodiment of the invention where the control element is
coupled to the yoke, which itself is coupled to the tension member of the clip assembly)
with id. at 15 (Figures 16 and 17 showing an embodiment of the invention where the
control element remains coupled to the yoke but where the yoke is detached from the
clip assembly) and id. at 19 (Figure 24 showing an embodiment of the invention
where the yoke is decoupled from both the control element and the clip).) Thus, based
on the specification and figures, the disclosure of the '371 patent is clear: the
invention contains a connector element (which includes a yoke) that not only is
releasably coupled to a control element via a frangible link, but is also removably
connected from the clip. The connector element, represented by the yoke, must be
detachable in two locations: it must be (1) detachable from (removably coupled to) the
control element and (2) detachable from (removably connected to) the clip assembly.
Plaintiffs' interpretation that the connector element need not be detachable from the

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clip assembly is not supported by the specification, and Plaintiffs have failed to
adduce evidence in the specification supporting their interpretation of the asserted
claim. (See ECF No. 679 25–26.)
Plaintiffs' statements during the IPR proceeding on the '371 patent likewise
support the Court's interpretation. As discussed in previous sections, plaintiffs are
held to arguments they made during IPR proceedings if their arguments represented
"unequivocal and unambiguous" claim interpretations. Aylus, 856 F.3d at 1363.
Unlike the discussion of Plaintiffs' statements regarding whether the driver was part
of the control wire, (see supra Section III.B.1.ii), in this context, Plaintiffs' statements
were clear. In construing claim 11 of the '371 patent, Plaintiffs argued that "the
express language of claim 11 requires the capability to release the capsule from the
sheath and remove the connector element from the clip assembly." (ECF No.
631-1 at 19 (emphasis added); ECF No. 631-2 at 14 (same).) Plaintiffs argue that
their IPR position has been mischaracterized and that their argument during the IPR
proceeding is the same as their argument here. (ECF No. 679 at 26.) But the Court
fails to see how this is the case based on the cited language concerning the "connector
element." The entire issue of this claim limitation turns on whether the connector
element must be "removably connected" to the clip. Plaintiffs are bound by their
unequivocal interpretation of the claim forwarded during the IPR. The Court need
go no further.
Plaintiffs' reliance on Cook Group Inc. v. Boston Scientific Scimed, Inc., 809 F.
App'x 977 (Fed. Cir. 2020) is misplaced. In that case, Cook Group Inc., Cook Medical

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LLC, and Boston Scientific SciMed, Inc. appealed decisions of the PTAB regarding
claims of the '371 patent. Particularly relevant for the issue here, the Federal Circuit
held that "the Board erred in its construction of claim 11's 'connector element' when
it determined that the element could not be a part of the clip arms." Id. at 983.
Plaintiffs here now urge that the Federal Circuit "held that the connector element
could be a part of the clip that does not separate from the clip." (ECF No. 679 at
26.) But the Federal Circuit's holding did not go that far. Not only do those words
not appear in the court's opinion, but the issue the Court analyzes today was not on
appeal. The Federal Circuit did not opine whatsoever on whether the connector
element needed to be "removably connected" to the clip; rather, all that was at issue
was whether the connector element could be located on the clip. Cook, 809 F. App'x
at 983 ("Defendants argue that the Board erred in concluding that the connector
element could not be located on the clip.").

The Federal Circuit held that the

connector element can be part of the clip assembly. Id. But again, this says nothing
about the type of connection that the connector element has with the clip assembly,
or that it is not also a part of the control element until such time as it detaches from
one or both of the control element or the clip assembly. After all, as Plaintiffs
themselves contend, the connector element is a part of the control element, yet it
detaches from the control element via a frangible link. (ECF No. 622 at 23 (discussing
the fact that the control element "includes" the connector element).) Simply because
the connecter element of claim 11 may or may not be a part of the clip assembly says
nothing about the claim limitation requiring it to be "removably connected" to the clip

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assembly (and removably coupled to the control element). For instance, as disclosed
in the '371 patent and discussed above, the connector element can be on the clip
assembly but can detach within the assembly from the base of the clip legs when the
appropriate user pressure is applied via the control element. (See ECF No. 451-4 at
35 (discussing the separation of the yoke from the tension member).) The Federal
Circuit's holding as to claim 11 is inapposite here.
For the aforementioned reasons, the Court finds that there is no genuine dispute
that the claim 11 "control element including a connector element" limitation is not
found in the Accused Products. Because claim 13 depends from claim 11, the lone
asserted claim of the '371 patent is found not to be literally infringed. The driver of
the Accused Products, which serves as the connector element, is not removably
coupled to the clip assembly as required by the claim.
There is also no genuine dispute that there is no infringement under the doctrine
of equivalents.

Because Plaintiffs argued that the claim only required a single

detachment, they did not identify an equivalent detachment in the Accused Products,
nor could they. As discussed extensively, the driver (the connector element) is not
removably connected to the clip assembly, and there is no such equivalent connection
that could meet this limitation. Plaintiffs have presented no evidence in support of
infringement on this claim limitation under the doctrine of equivalents. InTouch
Techs., Inc. v. VGO Commc'ns, Inc., 751 F.3d 1327, 1338 (Fed. Cir. 2014) ("The
patentee bears the burden of proof for infringement."). Ignoring this claim limitation
or finding some other "equivalent" would render the limitation meaningless.

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Freedman Seating Co. v. Am. Seating Co., 420 F.3d 1350, 1358 (Fed. Cir. 2005) ("[A]n
element of an accused product or process is not, as a matter of law, equivalent to a
limitation of the claimed invention if such a finding would entirely vitiate the
limitation."). No doubt, here, a key feature of the invention is the ability of the
connector element (a portion of which is the "yoke") to detach from the clip assembly.
This is a key element that cannot be eliminated. See Warner-Jenkinson Co. v. Hilton
Davis Chem. Co., 520 U.S. 17, 29 (1997) ("It is important to ensure that the
application of the doctrine, even as to an individual element, is not allowed such broad
play as to effectively eliminate that element in its entirety.").
The Accused Products do not infringe the lone asserted claim of the '371 patent,
claim 13 (which depends from claim 11), either literally or under the doctrine of
equivalents. Accordingly, the Court dismisses all claims against Defendants as to the
'371 patent. The Court therefore need not discuss other arguments as to invalidity.
Alternatively, the Court notes that even if the claim limitations of claim 11 are
found in the Accused Products, the lone asserted claim 13 would still not be infringed
either literally or under the doctrine of equivalents. Claim 13, which depends from
claim 11, adds the following limitation: "wherein the clip assembly includes a yoke
slidably received in the capsule and removably coupled to the control element." (ECF
No. 451-4 at 40.) Plaintiffs identify the proximal portion of the driver of the Accused
Products as the "yoke." (ECF No. 622 at 24.) Yet, the driver, as discussed above, also
serves as the "connector element" of claim 11. Plaintiffs urge the Court to consider
the District of Delaware's (the court of transfer) order wherein that court held that

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"the yoke may constitute at least a part of the connector element." (ECF No. 80 at 9.)
But that order did not pertain to claim 13 nor the construction of the term "yoke."
Instead, it discussed the "yoke" referenced throughout the '371 specification.
Here, with claim 13, the "yoke" is listed as a distinctly separate claim limitation
in the invention. See Becton, Dickinson & Co. v. Tyco Healthcare Grp., LP, 616 F.3d
1249, 1254 (Fed. Cir. 2010) (cleaned up) ("Where a claim lists elements separately,
the clear implication of the claim language is that those elements are distinct
components of the patented invention."). Simply put, Plaintiffs urge the Court to
identify the driver as the "connector element" limitation of claim 11 that "detaches
from the [control] element via a frangible link" and as the "yoke" limitation of claim
13 that is "removably coupled to the control element." Such a finding would be
nonsensical and render the added claim limitation of claim 13 superfluous. See
Andersen Corp. v. Fiber Composites, LLC, 474 F.3d 1361, 1370 (Fed. Cir. 2007)
(citation omitted) (discussing claim differentiation and stating that the "doctrine is
based on 'the common sense notion that different words or phrases used in separate
claims are presumed to indicate that the claims have different meanings and scope,"
and that "to the extent that the absence of such difference in meaning and scope
would make a claim superfluous, the doctrine of claim differentiation states the
presumption that the difference between claims is significant"). There could also be
no finding of infringement under the doctrine of equivalents because Plaintiffs simply
cannot identify an "equivalent" of a "yoke" in the Accused Products. See Kustom
Signals Inc. v. Applied Concepts, Inc., 264 F.3d 1326, 1333 (Fed. Cir. 2001) ("No

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claimed element, or an equivalent thereof, can be absent if the doctrine of equivalents
is invoked.").
D. Infringement of the '731 Patent
1. Claims 1 and 12
Plaintiffs assert that the Instinct Plus infringes claims 5 and 19 of the '731 patent.
Plaintiffs do not allege that the Instinct infringes the '731 patent. Claim 5 depends
from claim 1, while claim 19 depends from claim 12. (ECF No. 451-5 at 38.) The first
two clauses of claims 1 and 12 recite identical claim limitations. Claims 1 and 12
state, in relevant part, the following:
A medical device, comprising:
a clip including first and second clip arms, the clip being movable
between an open tissue receiving configuration in which the first
and second arms are separated from one another by a distance
selected to receive tissue therebetween and a closed configuration
in which the first and second arms are moved inward to capture the
tissue received therebetween;
an opening element engaging inner walls of the first and
second clip arms, the opening element urging the first and second
clip arms away from one another into the open tissue-receiving
configuration, wherein the opening element is movable between an
expanded configuration and a retracted configuration to correspond to a
movement of the clip between the open tissue receiving configuration
and the closed configuration
(ECF No. 451-5 at 38 (emphasis added).)
Claim 12 recites the following additional limitation in a separate clause introduced
by an "and" following "configuration" in the immediately preceding clause: "[; and] a
control wire coupled to the proximal end of the clip and operable to move the clip
between the open and closed configurations." (Id.) This additional recitation found

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in claim 12 is not disputed. Therefore, the Court finds that the Instinct Plus meets
this additional limitation.
Plaintiffs identify the nitinol strip of the Instinct Plus as the "opening element"
referenced in the '731 patent. (ECF No. 622 at 25.) The parties dispute whether the
nitinol strip urges the clip arms "into the open tissue-receiving configuration."
Plaintiffs argue that the opening element merely needs to apply any outward force
on the clip legs as they move into the open tissue-receiving configuration, even if the
opening element itself is no longer applying any force on the clip legs as the clip enters
the final configuration. (ECF No. 679 at 37 (arguing that the opening element only
needs to urge the clip arms by pressing outwardly on them "for a portion of the arms'
travel during opening").) On the other hand, Defendants argue that the nitinol strip
does not urge the first and second clip arms away from one another into the open
tissue-receiving configuration because the nitinol strip's purpose is to exert an
outward force on the clip arms during closing, and the nitinol strip plays no role in
helping the clip transition to the open tissue-receiving configuration. (ECF No. 633
at 48.) The Court agrees with Plaintiffs' claim interpretation and finds that there is
no genuine dispute of fact as to whether the Instinct Plus literally infringes this
limitation; the nitinol strip urges the clip arms of the Instinct Plus away from one
another into the open tissue-receiving configuration as required by claims 1 and 12 of
the '731 patent. This is so even if the strip's intended purpose in the Instinct Plus is
to exert an outward force on the clip arms during closing so long as they also urge the
clip arms outwardly during opening as claimed. The former does not preclude the

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latter. Also, if the strip exerts outward force beyond that claimed, this does not
immunize the device from infringing based on practicing the claimed "urging" force.
As previously stated, the words of a patent claim are generally given their
ordinary meaning in light of the claim language and the patent specification,
SkinMedica, 727 F.3d at 1195; here, the language of claims 1 and 12 clearly indicates
that the opening element must urge the clip arms "into the open tissue-receiving
configuration." (ECF No. 451-5 at 38.) "A claim construction that gives meaning
to all the terms of the claim is preferred over one that does not do so." Merck & Co.,
Inc. v. Teva Pharms. USA, Inc., 395 F.3d 1364, 1372 (Fed. Cir. 2005). The Court
agrees with Defendants' contention; simply exerting any outward force on the clip
arms is not enough to satisfy the claim limitation here. If that were the case, the
"into the open tissue-receiving configuration" clause would be rendered superfluous
(i.e., the claim would have instead simply stated that the opening element urges the
clip arms away from one another). Clearly, the opening element must help urge the
clip arms into this final configuration.
Yet, with the above construction in mind, the Court finds that there is no genuine
dispute of fact as to whether the nitinol strip of the Instinct Plus comports with the
claim limitation. The evidence shows that the nitinol strip, at least minimally, urges
the clip arms into the open tissue-receiving configuration. Defendants' arguments
and evidence to the contrary are not persuasive.
Defendants first argue that a separate component, dubbed the "rack-and-pinion
mechanism" formed between the jaws and the driver, is the component that actually

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opens the clip arms into the requisite configuration. (ECF No. 633 at 48.) The
proximal ends of the clip arms of the Accused Products engage the driver's rib
structure so that the movement of the driver causes the clip arms to open and close.
(ECF No. 632-4 at 58–63; ECF No. 621-4 at 17–20.) But the fact that the rack-andpinion mechanism also urges the clip arms into the open tissue-receiving
configuration is not dispositive here. The Court is even inclined to believe that the
rack-and-pinion mechanism is the core component that opens the clip arms. But the
claims do not say that the opening element is the only component that can urge the
clip arms into the requisite configuration, and the opening element certainly does not
need to be the main component completing this function. The claim only requires the
opening element to urge the clip arms into the open tissue-receiving configuration;
whether there is another component of the Accused Products that also urges the clip
arms into the open tissue-receiving configuration is inapposite.3 See In re Crish, 393
F.3d 1253, 1257 (Fed. Cir. 2004) (cleaned up) ("[I]t is well-established that

Leinsing and Nicosia have a similar debate in their expert reports. In their reports, Nicosia and
Leinsing conduct similar experiments in support of their opinions. They manually closed the clip arms
of the Instinct Plus and then released them. Leinsing conducted the experiment with the nitinol strip;
Nicosia conducted it without the nitinol strip. When the clip arms were released, the clip would return
to the open tissue-receiving configuration. Of relevance here is that the clip would return to the open
tissue-receiving configuration both when the nitinol strip was present and after it was removed. (ECF
No. 621-4 at 142; ECF No. 632-4 at 195.) Drawing on this, Nicosia concluded that the rack-and-pinion
mechanism, not the nitinol strip, urged the clip arms into the open tissue-receiving configuration.
(ECF No. 632-4 at 195.) But this conclusion is incomplete. Again, just because the rack-and-pinion
mechanism can urge the clip open by itself does not mean that the nitinol strip does not assist in this
process as well. In fact, Leinsing's report compares the opening of the clip with the nitinol strip to the
opening of the clip without the nitinol strip. When he opened a clip (which did not have a nitinol strip)
by moving the driver distally, he observed that while the clip still opened, the opening was delayed
and less controlled (ECF No. 621-4 at 142.) Thus, even if the rack-and-pinion mechanism is the main
component that urges the clip arms into the open tissue-receiving configuration, the nitinol strip
certainly provides a supporting force outward on the clip arms that also helps urge them into the open
tissue-receiving configuration.
3

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‘[c]omprising’ is a term of art used in claim language which means that the named
elements are essential, but other elements may be added and still form a construct
within the scope of the claim.").
Defendants next point to Plaintiffs' own animation, where the nitinol strip is
shown to not even be in contact with the clip arms as the arms reach the open tissuereceiving configuration (thus, they argue, it would be impossible for the nitinol strip
to exert any force on the clip arms at that stage). (ECF No. 633 at 48 (citing ECF No.
621-42 at 0:09).) But the animation and images that Defendants point to in order to
show that the nitinol strip is not in contact with the clip arms when they are in the
open tissue-receiving configuration all relate to the Instinct product, not the Instinct
Plus.

Plaintiffs are not alleging that the Instinct infringes the '731 patent.

Defendants' arguments are completely irrelevant here. In the Instinct Plus, the
relevant accused product for this claim limitation, there is no question that the nitinol
strip is in contact with the clip arms throughout the opening process all the way into
the open tissue-receiving configuration. (Compare ECF No. 632-4 at 61 with ECF No.
632-4 at 73 (Nicosia breaking down the Instinct clip first, where the nitinol strip does
not touch the clip arms in the final configuration, with the Instinct Plus clip, where
the nitinol strip clearly does); see also ECF No. 621-4 at 142, 151 (Leinsing showing
detailed images of the Instinct Plus clip reaching the open tissue-receiving
configuration, where the nitinol strip clearly still contacts the clip arms); see also ECF
No. 621-42 at 0:01 (title of the animation as "Instinct" rather than "Instinct Plus").)

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Further, the nitinol strip naturally exerts an outward force on the clip arms
because it has a natural tendency to return to its expanded configuration, and this is
not in dispute. (See, e.g., ECF No. 621-10 at 39 (Nicosia admitting that the nitinol
strip exerts an outward force on the clip arms when it is deformed and in contact with
the clip arms); ECF No. 632-4 at 195 (Nicosia arguing that the nitinol strip does not
"urge" the clip arms into the requisite configuration even though it "exerts an
outward force.").) Therefore, the nitinol strip "urges" the clip arms into the open
tissue-receiving configuration, as required. See Moba, B.V. v. Diamond Automation,
Inc., 325 F.3d 1306, 1316 (Fed. Cir. 2003) (stating that the ordinary meaning of "urge"
is either "to press or to push" or "to cause to move, hasten, or gather speed"). But
Nicosia's report, like Defendants' brief, argues that the rack-and-pinion mechanism
opens the clip into the open tissue-receiving configuration, that the claim requires
more than simply urging the clip arms away from one another, and that Leinsing
provided no evidence that the nitinol strip urges the clip into the required
configuration. (ECF No. 632-4 at 194–95.) These arguments are not persuasive.
First, again, the fact that the rack-and-pinion mechanism may indeed be the major
component urging the clip into the open tissue-receiving configuration says nothing
about the opening element, the nitinol strip. Second, as all parties agree, the nitinol
strip applies an outward force on the clip arms while in contact with them (which, in
the Instinct Plus, is throughout the entirety of the opening process); this inevitably
means it applies an outward force on the clip arms "urging" them into the open tissuereceiving configuration. Third, Leinsing does provide evidence further showing that

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this force, even if it is small, is not negligible. (See ECF No. 621-4 at 142 (discussing
how, while the clip still opens without the nitinol strip, the opening is delayed and
less controlled).)
Defendants next point to Leinsing's testimony in a separate proceeding. There,
when asked about the spring member of the Accused Products (here, the nitinol strip),
Leinsing stated that such components are used for stability to prevent jamming
during the clip's closing and that devices such as the "Defendants' device" do "not
need them for any kind of opening."

(ECF No. 632-14 at 6 (emphasis added).)

Defendants rely on this testimony to argue that the nitinol strip clearly is not an
opening element. But this testimony does nothing to change the Court's analysis
here. As noted, just because the nitinol strip is not "needed" for opening does not
mean that the nitinol strip does not help urge the clip arms into the open tissuereceiving configuration as claimed. Indeed, Defendants' product documentation is
consistent with this conclusion. (See ECF No. 621-24 at 24 (stating that one of the
functions of the nitinol strip is to "ensure clip opening").) As already discussed above,
the Court is aware that the clip can open without the nitinol strip; but the nitinol
strip still provides an outward force that urges the clip arms into the open
configuration. Thus, even accepting Defendants' contention that the nitinol strip's
purpose is for stability and to prevent jamming during closing, the undisputed
evidence shows that it does urge the clip into the open configuration as claimed, and
this is enough.

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The Instinct Plus has a nitinol strip that engages the inner walls of the clip arms
and applies an outward force on the clip arms, urging the clip arms, alone or in
combination with the rack-and-pinion mechanism, into the final open tissue-receiving
configuration as claimed. Accordingly, the Court finds that the Instinct Plus literally
infringes this claim limitation. Plaintiffs' Motion for Summary Judgment is granted
to this extent.
2. Claims 5 and 19
Claims 5 and 19, which depend from claims 1 and 12, respectively, add the same
exact limitation. Both claims recite the following: "wherein a distal end of the control
wire includes an increased width portion formed to removably engage the clip." (ECF
No. 451-5 at 38.) Defendants' only argument here is that Plaintiffs misidentify the
control wire as just the drive wire, when it should have been identified as both the
drive wire and driver. (ECF No. 633 at 50.) The Court has already addressed this
argument at length above, (see supra Section III.B.1.ii). The drive wire of the Instinct
Plus is the control wire; the driver is not part of the control wire. The drive wire has
a distal end with an increased width portion that is removably engaged with the clip
(as is required of the control wire in the claim); therefore, the Court finds that the
Instinct Plus literally infringes the claim limitations added by claims 5 and 19 of the
'731 patent. Thus, the Instinct Plus literally infringes claims 5 and 19 of the '731
patent and the Plaintiffs' are entitled to summary judgement accordingly.

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E. Infringement Under 35 U.S.C. §§ 271(b) and (c)
Plaintiffs have conceded that they will not assert indirect infringement claims.
(ECF No. 679 at 41–42.) Accordingly, the Court grants Defendants' Motion for
Summary Judgment as to indirect infringement under 35 U.S.C. §§ 271(b) and (c).
F. Cook Group Incorporated
Defendants argue that CGI, the parent company of Cook Medical LLC, is not liable
for direct infringement. (ECF No. 633 at 51–52.) Plaintiffs do not dispute that CGI
does not make, use, sell, offer to sell, or import the Accused Products as is required
for direct infringement under 35 U.S.C. § 271(a). Rather, Plaintiffs argue that CGI
is vicariously liable for the infringing activity of its subsidiary, Cook Medical LLC.
(ECF No. 679 at 17 (arguing that CGI can be held liable as the parent of Cook Medical
because it has a direct financial interest in the infringing activity and is able to direct
and supervise its subsidiary).)
Defendants counter that any direct infringement liability on a parent corporation
for the infringing activity of its subsidiary can only be accomplished by "piercing the
corporate veil," and because Plaintiffs do not make a "piercing the corporate veil"
argument here, CGI should be entitled to summary judgment and dismissed from the
case. (ECF No. 706 at 24.) The Court agrees.
Generally, a parent is liable for a subsidiary's direct infringement "only if the
evidence reveals circumstances justifying disregard of the status of [the entities] as
distinct, separate corporations." A. Stucki Co. v. Worthington Indus., Inc., 849 F.2d
593, 596 (Fed. Cir. 1988). In determining whether to disregard the corporate status

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of separate entities, the Federal Circuit draws on the general principles relating to
piercing the corporate veil. See id. (citing Orthokinetics, Inc. v. Safety Travel Chairs,
Inc., 806 F.2d 1565, 1579 (Fed. Cir. 1986)). "Corporate separateness is an issue of
regional-circuit law." Celgene Corp. v. Mylan Pharms. Inc., 17 F.4th 1111, 1125 (Fed.
Cir. 2021). In the Seventh Circuit, "[e]fforts to 'pierce the corporate veil' are governed
by the law of the state of incorporation." Stromberg Metal Works, Inc. v. Press Mech.,
Inc., 77 F.3d 928, 933 (7th. Cir. 1996) (citation omitted). Because Defendants are an
Indiana corporation and an Indiana limited liability company, Indiana law applies.
Under Indiana law, to succeed in piercing the corporate veil, the party seeking to
pierce the veil must "[1] prove that the corporate form was so ignored, controlled or
manipulated that it was merely the instrumentality of another and [2] that the
misuse of the corporate form would constitute a fraud or promote injustice." Reed v.
Reid, 980 N.E.2d 277, 301 (Ind. 2012) (citation omitted).
Plaintiffs have cited no facts that would justify a piercing of the corporate veil as
it relates to CGI. Instead, Plaintiffs argue that CGI and Cook Medical LLC have
significant overlap in officers/directors; that CGI provides support, oversight, and
control over Cook Medical LLC; and that patent law supports a finding of direct
infringement liability on a parent corporation under these circumstances. (ECF No.
679 at 40–41.) Plaintiffs' citations to the record and the law fall short at best.
Nothing in the record suggests that Cook Medical LLC is an "alter ego" of CGI and
nothing in the record suggests that treating Cook Medical LLC as a separate
corporate entity would promote fraud or injustice; Plaintiffs are not suggesting this

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is the case anyway.

Rather, Plaintiffs argue that patent law attributes direct

infringement liability on a parent if the parent had significant control over the
infringing subsidiary. Notwithstanding, as set forth in Orthokinetics, that patent law
does not supplant or alter black letter law concerning general principles relating to
piercing the corporate veil, this is inaccurate in any event. Plaintiffs first cite to
Autronic Plastics, Inc. v. Apogee Lighting, Inc., No. 19-CV-6268 (MKB), 2021 WL
5965715, (E.D.N.Y. Dec. 16, 2021), for the proposition that "[a]n actor may be held
liable for direct infringement based on another entity's actions where that actor
directs or controls the other entity's performance."

Id. at *4.

But that court's

reasoning is not persuasive nor binding on this Court and is inapposite in any case.
In that case, the court relied on a family of Federal Circuit cases all stemming from
Akamai Technologies, Inc. v. Limelight Networks, Inc., 797 F.3d 1020 (Fed. Cir. 2015).
But Akamai and its progeny do not stand for a rule that a party can be liable for direct
infringement any time it directs or controls the infringing activity of a subsidiary.
Rather, these cases apply to a particular context that is not relevant here: when the
patent claim allegedly infringed is a method claim and more than one party is
performing the pertinent steps. See Akamai, 797 F.3d at 1022 (emphasis added)
(discussing vicarious liability applicability for direct infringement and stating that
"[w]e will hold an entity responsible for others' performance of method steps in two
sets of circumstances: (1) where that entity directs or controls others' performance,
and (2) where the actors form a joint enterprise"); see also Travel Sentry, Inc. v. Tropp¸
877 F.3d 1370, 1378 (Fed. Cir. 2017) (citing to Akamai and stating that one actor may

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be liable for direct infringement of a method claim if it directed or controlled another
entity to perform certain steps). Plaintiffs attempt to transplant this language into
the apparatus claim context and argue that a parent entity can be liable for direct
infringement when it directs a subsidiary entity to make, use, sell, offer to sell, or
import an infringing product; Akamai did not go this far. Moreover, even if it did,
there is no assertion that CGI practiced any part of the claimed invention. So, it is
not even the case that the party being held liable practiced some but not all of the
claimed invention. Here, only Cook Medical LLC practices the claimed inventions.
Plaintiffs' reliance on Streck, Inc. v. Research & Diagnostic Systems, Inc., No.
8:06CV458, 2010 WL 3926059, (D. Neb. Sept. 30, 2010), is likewise unpersuasive.
The court in Streck, relying on Stucki, held that a parent company could be liable for
direct infringement based on its subsidiary's products if there is a "substantial and
continuing relationship" between the two companies.

Id. at *9.

But this

interpretation of Stucki not only does not comport with either Seventh Circuit or
Indiana law, which controls such matters, but misconstrues even Federal Circuit
precedent, which requires a piercing of the corporate veil before direct infringement
liability can attach to a parent. As discussed above, the language and analysis in
Stucki was clearly done in the context of piercing the corporate veil. The reasoning
and analysis of the court in Aspex, for instance, is much more in line with this Court's
reading of the law. In that case, the court analyzed the holding in Stucki and how it
has been characterized by the Federal Circuit. Aspex, 361 F. Supp. 2d at 216–17.
The court concluded that "the clearest statement from these cases suggests that the

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standard for piercing the corporate veil must be met before a parent may be held
liable for the acts of its subsidiary." Id. at 217 (comparing Stucki with Tegal Corp. v.
Tokyo Electron Co., 248 F.3d 1376 (Fed. Cir. 2001) and reasoning that a parent's
control over a subsidiary is a factor to consider in the context of an overarching
piercing the corporate veil analysis); see also FloodBreak, LLC v. Art Metal Indus.,
LLC, No. 3:18-cv-503 (SRU), 2020 WL 5300250, at *9 (D. Conn. Sept. 3, 2020) (citing
to Aspex and stating that, for the corporate veil to be pierced, the plaintiff must offer
evidence showing that recognizing a parent and its subsidiary as separate corporate
entities would permit the parent to commit fraud and illegitimately escape direct
infringement liability).

A mere "substantial and continuing relationship" is not

enough. This conclusion also makes sense in light of the causes of action available in
the patent system. Rather than holding a parent liable for direct infringement under
35 U.S.C. § 271(a), a party can seek damages from a parent that induces infringement
under § 271(b) or contributes a component to an infringing product under § 271(c).
This is, in fact, what the Federal Circuit suggests in its case law. For example, in
analyzing whether a parent company could be held liable for direct infringement for
its subsidiary's activity, the Federal Circuit stated that "[d]irect infringement . . .
requires more than mere control; direct infringement requires making, using, offering
to sell, or selling a patented invention. . . . Induced infringement, on the other hand,
requires 'actively and knowingly aiding and abetting another's direct infringement.'
. . . Thus, control may indeed serve as a predicate for induced infringement under

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appropriate circumstances." Hockerson-Halberstadt, Inc. v. JSP Footwear, Inc., 104
F. App'x 721, 724 (Fed. Cir. 2004) (emphasis added) (citation omitted).
But here, Plaintiffs have chosen to relinquish claims of induced or contributory
infringement. (ECF No. 633 at 52.) Absent any evidence justifying a piercing of the
corporate veil, CGI is entitled to summary judgment as a matter of law. CGI is not
liable for direct infringement as a separate and distinct legal entity that does not
make, use, sell, offer to sell, or import the Accused Products, and is not otherwise the
alter ego of Cook Medical LLC.
G.

IPR Estoppel

"The petitioner in an inter partes review of a claim in a patent . . . that results in
a final written decision . . . may not assert either in a civil action arising in whole or
in part under section 1338 of title 28 . . . that the claim is invalid on any ground that
the petitioner raised or reasonably could have raised during that inter partes
review." 35 U.S.C. § 315(e)(2) (emphasis added). The Federal Circuit holds that
"estoppel applies not just to claims and grounds asserted in the petition and
instituted for consideration by the Board, but to all grounds not stated in the petition
but which reasonably could have been asserted against the claims included in the
petition." Cal. Inst. of Tech. v. Broadcom Ltd., 25 F.4th 976, 991 (Fed. Cir. 2022).4
Against this backdrop, the parties break down their arguments regarding IPR

The Federal Circuits Cal. Tech. decision thus definitely settles the parties' dispute over the meaning
behind "reasonably could have raised." (See ECF No. 633 at 59; ECF No. 679 at 42.) Defendants'
arguments to the contrary are without merit. In interpreting § 315(e)(2), the Federal Circuit overruled
Shaw Industries Group, Inc. v. Automated Creel Systems, Inc., 817 F.3d 1293 (Fed. Cir. 2016), a case
on which Defendants rely.
4

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estoppel by prior art type, namely, (1) printed publications/patents and (2)
commercial product prior art. The Court will address each of these in turn.
1.

Prior Printed Publications and Patents

i.

References that Defendants knew about before the IPR

As discussed above with regard to the Motion to Preclude, courts interpret the
"reasonably could have raised" phrase in § 315(e)(2) to mean "any patent or printed
publication that a petitioner actually knew about or that 'a skilled searcher
conducting a diligent search reasonably could have been expected to discover.'" WiLAN Inc. v. LG Elecs., Inc., 421 F. Supp. 3d 911, 924 (S.D. Cal. 2019) (citations
omitted).
There is no dispute that Defendants knew of the following twelve patents and
printed publications prior to the IPR because these references were included in
Defendants' 2016 invalidity contentions: U.S. Patent No. 3,958,576 (“Komiya ‘576”),
U.S. Patent No. 5,373,854 (“Kolozsi ‘854”), U.S. Patent No. 5,423,857 (“Rosenman
‘857”), U.S. Patent No. 5,542,432 (“Slater ‘432”), U.S. Patent No. 5,569,274 (“Rapacki
‘274”), U.S. Patent No. 5,749,881 (“Sackier ‘881”), U.S. Patent No. 5,766,189
(“Matsuno ‘189”), U.S. Patent No. 5,776,075 (“Palmer ‘075”), U.S. Patent No.
5,843,000 (“Nishioka ‘000”), Japanese Unexamined Patent App. Pub. No. S60-103946
(“Shinozuka ‘946”), U.S. Patent No. 4,733,664 (“Kirsch ‘664”), and U.S. Patent No.
7,094,245 (“Adams ‘245”). (See ECF No. 621-33 at 22–44; see also ECF No. 621-34 at
5–7; ECF No. 621-35 at 5–7; ECF No. 621-36 at 5–8; see also Wi-LAN, 421 F. Supp.
3d at 925 ("Several district courts have held that the identification of prior art in

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invalidity contentions generated prior to the filing of the IPR petition is sufficient to
establish as matter of law that the accused infringer knew of those prior art
references.").) The dispute as to these known references is to what extent they can
be used in light of IPR estoppel. Plaintiffs argue that Defendants are estopped from
asserting these references at all. (ECF No. 622 at 28.) But this is a bridge too far.
The language of the pertinent statute precludes Defendants from raising "any
ground that [they] raised or reasonably could have raised" during the IPR
proceeding. 35 U.S.C. § 315(e)(2) (emphasis added). A "ground" is not necessarily
equivalent to a reference. (See ECF No. 633 at 62.) Rather, "[c]ourts have clarified
that an invalidity 'ground' before the PTAB is 'the basis or bases on which a petitioner
challenges a claim.'" Cal. Inst. of Tech. v. Broadcom Ltd., No. CV 16-3714 GW
(AGRx), 2018 WL 7456042, at *4 (C.D. Cal. Dec. 28, 2018) (citation omitted). Thus,
Defendants are estopped from arguing any invalidity ground that rests solely on the
previously known references listed above; however, Defendants are permitted to raise
grounds (e.g., obviousness) that rely on these known references in combination with
other references that Defendants did not know about and that a skilled searcher
conducting a diligent search reasonably could not have found.

For example,

Defendants are estopped from arguing invalidity based on solely the Sackier '881
patent (which Defendants asserted in their 2016 contentions). Defendants would also
be estopped from asserting invalidity grounds based on Sackier '881 in combination
with any other references that Defendants knew about or that a skilled searcher
reasonably could have discovered. On the other hand, if Defendants wish to make an

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obviousness invalidity argument that combines Sackier '881 with a reference that
Defendants did not know about prior to IPR and that a skilled searcher could not
reasonably have discovered, they are permitted to do so. This would, after all, be a
new and unique ground that Defendants could not have reasonably raised during the
IPR.
Accordingly, the Court concludes that Defendants are estopped from raising any
invalidity grounds that rely on any of the following references (either solely or in any
combination with one another): U.S. Patent No. 3,958,576 (“Komiya ‘576”), U.S.
Patent No. 5,373,854 (“Kolozsi ‘854”), U.S. Patent No. 5,423,857 (“Rosenman ‘857”),
U.S. Patent No. 5,542,432 (“Slater ‘432”), U.S. Patent No. 5,569,274 (“Rapacki ‘274”),
U.S. Patent No. 5,749,881 (“Sackier ‘881”), U.S. Patent No. 5,766,189 (“Matsuno
‘189”), U.S. Patent No. 5,776,075 (“Palmer ‘075”), U.S. Patent No. 5,843,000
(“Nishioka ‘000”), Japanese Unexamined Patent App. Pub. No. S60-103946
(“Shinozuka ‘946”), U.S. Patent No. 4,733,664 (“Kirsch ‘664”), and U.S. Patent No.
7,094,245 (“Adams ‘245”). However, Defendants may rely on the aforementioned
references in combination with other prior art that they did not know of or that they
could not have reasonably discovered with a diligent search.
ii.

References that Defendants reasonably could have discovered with a
diligent search

Plaintiffs argue that Defendants are estopped from asserting the following eleven
prior art references because a skilled searcher reasonably could have been expected
to discover them with a diligent search: U.S. Patent No. 5,645,075 (“Turturro ‘075”),
U.S. Patent No. 5,967,997 (“Turturro ‘997”), International Patent App. No. WO

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99/15089 (“Cosgrove ‘089”), U.S. Patent No. 5,636,639 (“Turturro ‘639”), U.S. Patent
No. 4,896,678 (“Ogawa ‘678”), U.S. Patent No. 5,172,700 (“Bencini ‘700”), U.S. Patent
No. 5,211,655 (“Hasson ‘655”), U.S. Patent No. 5,368,606 (“Marlow ‘606”), U.S. Patent
No. 5,782,748 (“Palmer ‘748”), U.S. Patent No. 5,797,957 (“Turturro ‘957”), and U.S.
Patent No. 6,077,290 (“Marini ‘290”). (ECF No. 622 at 29–30.) The Court finds that,
based on the overwhelming evidence in the record, no reasonable jury could find in
favor of Defendants here. A skilled searcher conducting a diligent search reasonably
could have found all of the aforementioned references; accordingly, Defendants are
estopped from arguing invalidity on any grounds that rely on these references on
their own, or in combination with other previously known references.
First, the Turturro '075, Turturro '997, Turturro '639, and Cosgrove '089
references were included in Defendants' June 2017 contentions, served six months
after the IPR petition was filed, (ECF No. 573-3 at 4–6; ECF No. 573-4 at 4–6); a few
months after that, in their December 2017 supplemental contentions, Defendants
included the remaining references (i.e., Ogawa '678, Bencini '700, Hasson '655,
Marlow '606, Palmer '748, Turtorro '957, and Marini '290). (ECF No. 548 at 8–10;
ECF No. 549 at 8–10.)

In other words, within one year of their IPR petition,

Defendants were able to find all the aforementioned references. The discovery of
references such a short time after the IPR petition, when there is no evidence that
the same search could not have been conducted before the petition, suggests the
references reasonably could have been discovered with an earlier diligent search.5

Defendants argue that such an inference means "the only references a skilled searcher could not find
are those that were never found." (ECF No. 633 at 28.) That is not so. For instance, there may be
5

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Nothing else had changed. Defendants could have presented evidence explaining why
their subsequent discovery of the pertinent references required exceptional
circumstances or strategies that would not have been used by a skilled searcher
conducting a reasonably diligent search; but they did not. See, e.g., Wi-LAN, 421 F.
Supp. 3d at 926 (noting that the patent challenger had pointed to no barriers or
difficulties that would cause the prior art search conducted after the IPR petition to
produce different results than one conducted before the IPR petition). Other courts
have relied on evidence of subsequent reference discovery to find that a diligent
search could have reasonably discovered the references prior to the IPR petition. See,
e.g., id. ("Evidence that LG discovered these references through a prior art search is
clear evidence that LG reasonably could have discovered these references through a
diligent search."); Sioux Steel Co. v. Prairie Land Mill Wright Servs., No. 16-cv-2212,
2022 WL 4132441, at *11 (N.D. Ill. Sept. 12, 2022) ("Because these references were
'found in a later prior art search, there is a reasonable inference that [they] could
have been found earlier by a skilled searcher.'"); Trustid, Inc. v. Next Caller Inc., No.
18-172 (MN), 2021 WL 3015280, at *1 (D. Del. July 6, 2021) ("[T]he fact that
Defendant included Goldman in its invalidity contentions filed just several months
after the IPR petition confirms that a skilled searcher likely would have been able to
find the reference.").

references that a skilled searcher could not have found that are later found using new search
strategies, improved databases, and years of painstaking search. But those factors are not present
here.

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Second, Plaintiffs' expert Lhymn provides a substantial report detailing various
methods that a skilled searcher could have used to reasonably discover the references
in question, including examples of search strings that a searcher could have used to
reasonably find the prior art.

(ECF No. 621-33 at 19–20.)

Lhymn's analysis

explained why the terms used in the search terms are reasonable in light of the
Asserted Claims. (Id. (discussing where the search terms or their related synonyms
can be found in the patent abstract, claims, and specification).)

Lhymn used

prevalent terms present in the relevant patents (e.g., tissue, clip, sheath, lock,
actuate, handle, clamp, etc.), and used a related synonym prevalent in the art
("effector") to develop some of the search strings. (ECF No. 621-33 at 19–20.)
Third, the various references at issue here were closely related to references that
Defendants knew about. Four references, Turturro '075, Turturro '997, Turturro '639,
and Turturro '957, all share a common inventor, Vincent Turturro, with the '048 and
'731 patents. (See ECF No. 621-40 at 30 (Defendants' expert, Davis, acknowledging
that one method of discovering prior art is to search for prior art by the inventors
listed on the patent).)

The Palmer '748 reference (in addition to the Turturro

references just mentioned), is owned by Plaintiffs through its predecessor, Symbiosis
Corp. (ECF No. 621-46; see also ECF No. 621-40 at 27–28 (Davis acknowledging the
use of assignees as a tactic in prior art searches); ECF No. 621-33 at 73 (Lhymn
discussing how a skilled searcher could use Patbase to find prior art assigned between
Symbiosis and Plaintiffs).) Five more references, Turturro '075, Ogawa '678, Hasson
'655, Marlow '606, and Palmer '748 were cited throughout the prosecution of

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Defendants' own patents directed to the same technical field, an area that would have
been readily examined by a skilled searcher conducting a diligent search. (See ECF
No. 621-33 at 52, 63, 67, 71, 74.) Six more references, Turturro '997, Turturro '639,
Ogawa '678, Bencini '700, Hasson '655, and Marlow '606, are cited by or cite to prior
art references included in Defendants' 2016 invalidity contentions. (ECF No. 621-44
at 2; ECF No. 621-45 at 2; ECF No. 621-52 at 2; ECF No. 621-53 at 3; ECF No. 62154 at 2; see also Wi-LAN, 421 F. Supp. 3d at 926 (finding that certain references could
have been found with a reasonably diligent search because the reference was cited to
in prior art contained in the patent challenger's invalidity contentions served before
the IPR petition).) And every reference shares at least one classification with the
Asserted Patents (and all but one share multiple): Turturro ‘075 (IPC A61B 17/00,
17/28, and 19/00 and CPC A61B 2017/292), Turturro ‘997 (IPC A61B 17/00 and 17/28
and CPC A61B 2017/003), Cosgrove ‘089 (IPC A61B 17/00, 17/12, 17/28, 17/122, and
17/128 and CPC A61B 17/122, 17/1285, and 2017/292), Turturro ‘639 (IPC A61B
17/00, 17/28, and 19/00), Ogawa ‘678 (IPC A61B 17/28 and 19/00 and CPC A61B 90/03
and 2017/292), Bencini ‘700 (IPC A61B 17/00 and 17/28), Hasson ‘655 (IPC A61B
17/28 and CPC A61B 2017/292), Marlow ‘606 (IPC A61B 1/00, 17/00, 17/28, and
19/00), Palmer ‘748 (IPC A61B 1/00, 17/00, and 17/28 and CPC A61B 2017/292),
Turturro ‘957 (IPC A61B 17/28), and Marini ‘290 (IPC A61B 17/00 and 17/28 and CPC
A61B 2017/292).

(ECF Nos. 621-62–75).

Courts have looked at the shared

classifications between prior art references and asserted patents to conclude that a
diligent search reasonably could have discovered said references. See, e.g., Trustid,

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2021 WL 3015280, at *1. Cf. Palomar, 2020 WL 2115625, at * 16 (finding that two
references likely could not be discovered from a reasonable search in part because
there was a "lack of overlap in classifications").
Taken together, these three arguments mean no reasonable jury would find for
Defendants here.

Accordingly, because a skilled searcher conducting a diligent

search reasonably could find all of the remaining asserted references, Defendants are
estopped from asserting them individually or in combination with one another.
2.

Systems and Devices

Plaintiffs ask the Court to apply IPR estoppel to Defendants' prior art systems
and devices and to therefore preclude Defendants from using the following devices in
their invalidity arguments: (1) the Olympus Endoclips, (2) Plaintiffs' Radial Jaw
Device, (3) Plaintiffs' Multibite Device, (4) Marlow's Nu-Tip Device, and (5) the
Switch-Blade Device.
The party asserting estoppel bears the burden to show that estoppel applies. WiLAN, 421 F. Supp. 3d at 925; CliniComp Int'l, Inc. v. Athenahealth, Inc., No. A-18CV-00425-LY, 2020 WL 7011768, at *2 (W.D. Tex. Oct. 28, 2020) ("The moving party
bears the burden of showing IPR estoppel.").

IPR estoppel precludes a patent

challenger from asserting that a claim is "invalid on any ground that the petitioner
raised or reasonably could have raised during . . . inter partes review." 35 U.S.C. §
315(e)(2) (emphasis added). "[C]ourts have interpreted ['ground'] in the IPR estoppel
context to mean the 'specific pieces of prior art' that are 'the basis or bases on which
a petitioner challenges a claim.'" Medline, 2020 WL 5512132, at *3. But a petitioner

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in an IPR can request to cancel a claim as unpatentable "only on the basis of prior art
consisting of patents or printed publications." 35 U.S.C. § 311(b) (emphasis added).
Thus, a petitioner is statutorily prohibited from raising physical prior art devices and
systems at the IPR. IPR estoppel, then, at least generally, does not apply to physical
device prior art because such prior art "could not have been raised" during the IPR.
CliniComp, 2020 WL 7011768, at *2 ("Estoppel does not extend to other types of prior
art, such as prior-art devices."); SPEX Techs. Inc. v. Kingston Tech. Corp., No. SACV
16-01790 JVS (AGRx), 2020 WL 4342254, at *15 (C.D. Cal. June 16, 2020);
IOENGINE, LLC v. PayPal Holdings, Inc., No. 18-452-WCB, 2022 WL 2800861, at
*31 (D. Del. June 15, 2022) (citation omitted) ("In general, IPR estoppel does not apply
to device art, because 'a petitioner cannot use an IPR to challenge the validity of a
patent claim . . . based on prior art products or systems.'").
Plaintiffs ask the Court to depart from this general rule and allow IPR estoppel to
apply to physical devices in particular situations. The Court will address each in
turn.
i.

Analysis Under Medline

Plaintiffs argue that Medline Industries, Inc. v. C.R. Bard, Inc., No. 17 C 7216,
2020 WL 5512132 (N.D. Ill. Sept. 14, 2020), allows IPR estoppel of devices when the
defendant relies on estopped patents or printed publications to show how the prior
art devices worked.

But the Medline court's holding was very narrow: an IPR

petitioner will avoid estoppel "if the invalidity ground it pursues in litigation actually
relies upon a product or some other product-related evidence that could not have been

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introduced in an IPR proceeding as a prior art reference." Id. at *5 (emphasis in the
original). Stated differently, "the petitioner cannot put forth invalidity arguments in
litigation that rely solely upon patents or printed publications that could have been
raised in the IPR, and then claim that IPR estoppel does not apply because these
printed materials reflect or represent a prior art product." Id. (emphasis added). The
Court agrees with this narrow holding. A patent challenger cannot rely solely on
otherwise estopped printed publications or patents to describe how a physical device
works and then argue that they are actually relying on a physical device. Rather, the
patent challenger must, at least in part, substantively rely on the actual physical
specimen to escape IPR estoppel. As will be discussed, this rule goes hand in hand
with the standard under Wasica; in other words, the physical device must provide a
substantive difference to the challenger's invalidity argument that would not have
been available by solely relying on the patents and publications describing the device.
In this case, Defendants do not rely solely on patents or printed publications to
describe how the various physical devices work. While Defendants certainly rely on
some printed publications and patents, at least some portions of Defendants'
invalidity arguments rely substantively on the physical specimens themselves. (See,
e.g., ECF No. 632-7 at 30–35 (discussing features of the Olympus Endoclip physical
device through specimen testing and physician testimony); id. at 36–37 (explaining,
through inspection and testing of the physical Radial Jaw device, relevant pinching
features of the device); id. at 38–39 (same as to the Multibite device).)

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Accordingly, the Court finds that Defendants are not relying solely on estopped
documents to describe how their asserted physical devices work; Plaintiffs have not
met their burden under Medline.
ii.

Analysis Under Wasica

Plaintiffs also rely on Wasica Finance GmbH v. Schrader International, Inc., 432
F. Supp. 3d 448 (D. Del. 2020) to argue that IPR estoppel of physical devices is allowed
when the defendant relies on devices themselves that are described in estopped
patents or printed publications. See Wasica, 432 F. Supp. 3d at 455; IOENGINE,
2022 WL 2800861, at *31 (citing cases including Wasica and stating that "some courts
have estopped defendants from asserting device art when 'the physical product is
entirely cumulative' of the prior art raised in the IPR, i.e., when the product is
“materially identical” to the prior art reference raised in the IPR"). Of course, Wasica
is not binding on this Court or other courts across the country, and some courts have
expressly rejected Wasica's reasoning based on statutory interpretation. See, e.g.,
Chemours Co. FC, LLC v. Daikin Indus., Ltd., No. 17-1612 (MN), 2022 WL 2643517,
at *2 (D. Del. July 8, 2022) (declining to apply Wasica absent guidance from the
Supreme Court or the Federal Circuit). This Court, however, finds Wasica persuasive
and holds that a patent challenger will be estopped from using a physical device to
argue invalidity if all of the material limitations of that device were disclosed in a
patent or printed publication that the patent challenger either knew about or
reasonably could have discovered with a diligent search prior to the IPR. Despite

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opposition from some courts, the reasoning in Wasica is not without its support from
the statutory language as well:
35 U.S.C. § 312(a)(3) identifies as separate requirements to be included
in an IPR petition "the grounds on which the challenge to each claim is
based, and the evidence that supports the grounds for the challenge to
each claim." . . . In this way, the Patent Act distinguishes between
grounds and evidence. Since the estoppel provision, § 315(e)(2), applies
to grounds, a petitioner is estopped from proceeding in litigation on
those grounds, even if the evidence used to support those grounds was
not available to be used in the IPR.
Wasica, 432 F. Supp. 3d at 454 (emphasis in the original). In other words, if the
patent challenger is relying on a physical device at the district court that is fully
disclosed in an estopped patent or publication, then there is truly no substantive
difference between the ground to be argued before the district court and the ground
that was or reasonably could have been argued at the IPR. This is true even if the
patent challenger could not have used the physical device at the IPR.6 As the court
in Wasica notes, though, the reference that discloses the limitations of the physical
device must be "materially identical" to the physical device.

If reliance on the

physical device discloses any substantive additional limitation that was not present
in the reference, the physical device will not be estopped. Thus, to meet its burden,
a plaintiff must show that each and every material limitation present in the physical

As a simple example, assume Patent A discloses claim limitations 1, 2, and 3, and Patent B discloses
claim limitations 4, 5, and 6. At the IPR for Patent C, a patent challenger could present an argument
that Patent C is invalid as obvious in light of Patents A and B. Now assume that this argument is
rejected. Additionally, assume Physical Device A discloses the same claim limitations 1, 2, and 3 that
were disclosed in Patent A. If this Court declines to follow Wasica, then a patent challenger could
argue that Patent C is invalid as obvious in light of Physical Device A and Patent B. But this would
be irrational, curb the efficiency purposes of IPR estoppel, and allow the patent challenger to make an
identical challenge at the district court based on the exact same ground as that made at the IPR (i.e.,
based on the exact same limitations under the same invalidity theory with essentially the same pieces
of prior art).
6

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device is disclosed in the estopped reference; the burden then shifts to the defendant.
If the defendant, in response, points to a material limitation that is disclosed in the
physical device that is not disclosed in the estopped reference, then the burden shifts
back to the plaintiff to show why said limitation is (1) either not material or (2) is in
fact specifically disclosed in the estopped reference.

See CliniComp, 2020 WL

7011768, at *2 ("The moving party bears the burden of showing IPR estoppel."). Only
then will the Court extend IPR estoppel to a physical device.7
iii.

Application to Defendants' Asserted Prior Art Devices

The Court will address the application of IPR estoppel to each physical device in
turn.
Upon review of the patents and publications that Plaintiffs have identified, the
Court finds that the physical Olympus Endoclips are not materially identical to any

Additionally, it is important that this application of IPR estoppel is not abused. Again, the point of
IPR estoppel is to preclude a patent challenger from arguing the same ground that it raised or
reasonably could have raised at the IPR. A plaintiff cannot bring numerous estopped references, each
disclosing a few limitations of the physical device, and then argue that the physical device as a whole
must be estopped. Combining one reference (call it Reference A) with numerous other references
(References B through E) that each independently disclose some limitations is certainly not the same
"ground" as combining Reference A with a physical device that by itself discloses all of the material
limitations of References B through E. If all of the material features of the device are not fully disclosed
in a single reference, then the physical device cannot be estopped. After all, showing that all material
features of a patent claim are disclosed in an infinite number of references is typically not enough to
prove invalidity under an obviousness theory; rather, the patent challenger must show a motivation
to combine these references. See KSR Int'l Co. v. Teleflex Inc., 550 U.S. 398, 418 (2007) (discussing
the motivation to combine inquiry in the obviousness context). The motivation to combine Reference
A with References B through E is certainly a different inquiry than the motivation to combine
Reference A with a singular physical device. This single reference requirement aligns with other
courts' application of IPR estoppel to physical devices as well. See Wasica, 432 F. Supp. 3d. at 455
(finding IPR estoppel as to the physical ZR-1 Sensors because all of the material elements were
disclosed in a single 1990 prior art publication); SPEX, 2020 WL 4342254, at *15 ("The Court finds
that the reliance on some printed publications in an overall collection of documents being used to
describe a system invalidity theory should not lead to estoppel of the overall system invalidity theory
itself, nor piecemeal exclusion of the printed publications underlying that system invalidity theory.").
7

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one of these estopped references.

Plaintiffs compare annotated images of the

Olympus Endoclips (taken from Nicosia's report) to figures disclosed in various
patents, (ECF No. 622 at 39 (comparing Komiya '576 and Shinozuka '946)), to show
that some features of the Olympus Endoclips are disclosed in the references. (See,
e.g., id. (discussing the figure-8 clip, hook member, control wire, and sleeve).) But not
all the material features of the Olympus Endoclips are disclosed in these references.
Even in comparing the Komiya '576 disclosure to the Shinozuka '946 disclosure, for
example, the Court is not convinced that these references even describe the same clip.
The clip in Komiya '576 links to the control wire via a base whose shape completely
closes. (ECF No. 621-59 at 4.) On the other hand, the Shinozuka '946 clip links to
the control wire via a hook at the base of the clip. (ECF No. 674-30 at 5.) This
difference is not immaterial, as Plaintiffs themselves have previously noted. (See
ECF No. 631-5 at 68–69 (discussing the significance of this difference in shape).)
Plaintiffs then move to the Matsuno '189 patent to show that it discloses a link that
is not integral with the control wire or clip, a feature that Defendants point to with
the Olympus Endoclips. (ECF No. 622 at 40.) But again, the clip in Matsuno '189
appears to have a link and control wire that are shaped differently and connect
differently than the clips in the other references. (Compare ECF No. 621-61 at 4, 6–
7 with ECF No. 621-59 at 4 and ECF No. 674-30 at 5.) Additionally, Plaintiffs are
erroneously relying on multiple patents which each purportedly disclose particular
limitations of the Olympus Endoclips. These references in combination would not
present the same ground as the Olympus Endoclips by themselves.

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Plaintiffs' reliance on the Olympus Endoclips Instructions for Use as an estopped
printed publication that fully discloses all material limitations of the Olympus
Endoclips is insufficient. (See ECF No. 622 at 40.) The Instructions for Use document
does not disclose that the Olympus devices are capable of reversibly opening and
closing, which is a key claimed feature in the Asserted Patents here.8 (ECF No. 633
at 25; see generally ECF No. 674-7 at 222; ECF No. 674-8 at 57; ECF No. 674-9 at 3.)
Plaintiffs' estoppel arguments as to the Radial Jaw device and the Multibite device
suffer from similar deficiencies. With both devices, Plaintiffs list an assortment of
references which they claim disclose all material limitations of the physical devices.
(See ECF No. 622 at 41–42.) Plaintiffs support this argument by relying on Leinsing's
cumulativeness opinion. However, the analysis presented is insufficient as the Court
fails to see where Leinsing (or Plaintiffs in their brief) shows how any single reference
discloses all of these material features. (See, e.g., ECF No. 621-77 at 36.)

In fact,

Leinsing's cumulativeness opinion as a whole is not helpful at all and only offers
conclusory testimony on the issue. (See id. (concluding in broad strokes that the
asserted physical devices are cumulative and offering burdensome citations to full
documents in support).) In any case, none of the references that Plaintiffs point to
discloses the fact that the physical Radial Jaw or Multibite clips can "pinch tissue
without cutting." (ECF No. 633 at 25.) This is not a negligible difference. Plaintiffs
themselves have discussed the importance of this limitation. (See ECF No. 631-25 at
27–30 (discussing that "the claimed clip must be capable of 'pinching', which is a

As far as the Court can tell, none of the other patents and printed publications disclose this feature
either.
8

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compression force" and differentiating biopsy forceps which apply a shear force and
therefore do not constitute a "clip").) In order to ascertain this feature, Defendants
tested physical specimens of the Radial Jaw and Multibite. (ECF No. 632-7 at 36–
39.) In other words, this feature was not derived from any estopped patent or printed
publication. Accordingly, the Radial Jaw device and the Multibite device are not
materially identical to any single estopped reference.
Plaintiffs have more success with the Marlow Nu-Tip device. Defendants and
their expert, Nicosia, rely almost exclusively on the Marlow '606 patent in describing
the Nu-Tip device and how it works. (See, e.g., ECF No. 674-18 at 116–22 (relying on
figures from the Marlow '606 patent to identify all key limitations of the device, such
as an "opening element").)

Importantly, all of the limitations that Defendants

identify in the device (the opening element, the open and closed configurations, the
clip, the linkage mechanism with pins engaging the inner walls, the separable link,
the control wire, etc.) are disclosed in the Marlow '606 patent. (ECF No. 621-37 at 3–
4 (showing figures used by Defendants, which were later annotated to include all
material elements).) Because the Court has already found that the Marlow '606
patent is estopped prior art, (see supra III.G.1.ii.), and because the Marlow '606
patent is materially identical to the Marlow Nu-Tip physical device, Defendants are
estopped from using the device to argue invalidity.
Finally, the Court finds that the Switch-Blade device is not materially identical to
any estopped reference produced by Plaintiffs. Plaintiffs argue that all material
limitations of the Switch-Blade are disclosed in the Furnish '290 patent and,

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alternatively, in the device's brochure and instruction card. The Court disagrees.
First, the Furnish '290 patent discloses very little about the clip portion of the device,
focusing almost exclusively on the actuating portion of the device. (See ECF No. 62178 at 3.) The specification only mentions the "surgical tool 23" a few times and only
states that it is connected to the distal end of the device's shaft. (Id. at 6.) There is
no indication at all that this surgical tool (which Defendants argue is analogous to a
"clip") is detachable from the device (similar to the claimed linkage feature of the
invention here). Plaintiffs point to no evidence in the patent to suggest otherwise.
The brochure/information card of the Switch-Blade likewise does not disclose all
material features of the physical device; specifically, these documents provide no
detail about the surgical tool (i.e., clip) whatsoever. (See generally ECF No. 674-70.)
To ascertain key features of the Switch-Blade clip, such as the "opening element
engaging inner walls of first and second clip arms," Defendants had to rely on the
device's 510(k) application. (See ECF No. 632-7 at 70–71.) The estopped references
that Plaintiffs point to do not disclose these features. Therefore, Defendants are not
estopped from relying on the physical Switch-Blade device.
H. Collateral Estoppel
During the IPR of the '731 patent, the PTAB found, and the Federal Circuit
affirmed, that the asserted claims of the '731 patent were not rendered invalid by the
prior art patents and printed publications asserted therein. Defendants want now to
argue that the claims are in fact invalid. Plaintiffs wish to defend against such a
challenge. But Defendants argue that Plaintiffs are collaterally estopped from doing

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so. (ECF No. 633 at 52.) The Court first recaps important background information
germane to this issue. Claims 5 and 19 of the '731 patent, the Asserted Claims,
depend from claims 4 and 12, respectively. (ECF No. 451-5 at 38.) Claims 5 and 19
add an identical limitation: "wherein a distal end of the control wire includes an
increased width portion." (Id.) In the IPR, the Patent Office held claims 4 and 12
unpatentable as anticipated by Sackier but claims 5 and 19 were found to not be
obvious over Sackier. (ECF No. 345-7 at 86.) Because the only difference between
claim 4/claim 12 and claim 5/claim 19 is the "increased width" limitation, Defendants
urge the Court to find that the same invalidity "issue" has already been litigated at
the IPR and thus Plaintiffs should be collaterally estopped from disputing invalidity
here.
"Collateral estoppel protects a party from having to litigate issues that have been
fully and fairly tried in a previous action and adversely resolved against a partyopponent." Ohio Willow Wood Co. v. Alps South, LLC, 735 F.3d 1333, 1342 (Fed. Cir.
2013). "If the differences between the unadjudicated patent claims and adjudicated
patent claims do not materially alter the question of invalidity, collateral estoppel
applies."

Id. (emphasis added).

Regional circuit precedent guides the general

principles of collateral estoppel, but Federal Circuit precedent is applied "to those
aspects . . . that involve substantive issues of patent law." Id.; see also Aspex Eyewear,
Inc. v. Marchon Eyewear, Inc., 672 F.3d 1335, 1341 n.1 (Fed. Cir. 2012) ("[T]he
question whether a particular claim in a patent case is the same as or separate from

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another claim has special application to patent cases, and we therefore apply our own
law to that issue.").
In the Seventh Circuit, collateral estoppel has the following elements: "(1) the
issue sought to be precluded is the same as an issue in the prior litigation; (2) the
issue must have been actually litigated in the prior litigation; (3) the determination
of the issue must have been essential to the final judgment; and (4) the party against
whom estoppel is invoked must have been fully represented in the prior action."
Adams v. City of Indianapolis, 742 F.3d 720, 736 (7th Cir. 2014) (citation omitted).
The parties dispute only the first element—whether the "increased width" limitation
materially alters the issue of validity.
Defendants present an interesting issue of first impression before the Court. The
law on this issue is varied and relatively sparse; no case is directly analogous. In
Intellectual Ventures I, LLC v. Lenovo Group Ltd., 370 F. Supp. 3d 251, 256–57 (D.
Mass. 2019), the court held that collateral estoppel precluded assertion of
unadjudicated claims that do not "materially alter the question of invalidity."
However, this conclusion fails to account for the different burdens at the IPR and
district court. See, e.g., Papst Licensing GmbH & Co., KG v. Samsung Elecs. Co., 403
F. Supp. 3d 571, 602 (E.D. Tex. 2019) (finding no "binding precedent addressing
whether a finding of invalidity under the preponderance of the evidence standard in
an IPR collaterally estops invalidity arguments for separate, unadjudicated claims
under the clear and convincing standard in a district court") (citing B & B Hardward,
Inc. v. Hargis Indus., Inc., 575 U.S. 138, 148 (2015)); United Therapeutics Corp. v.

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Liquidia Techs., Inc., No. 20-755-RGA-JLH, 2022 WL 823521, at *4 (D. Del. Mar. 18,
2022) (declining to apply collateral estoppel and stating that "the problem for
Liquidia is that the PTAB made its findings on a preponderance of the evidence
standard, and Liquidia must prove invalidity in this case by clear and convincing
evidence"). Defendants successfully showed that claims 4 and 12 were unpatentable
as obvious by a preponderance of the evidence at the IPR. (ECF No. 345-7 at 86.) But
here, to show that claims 5 and 19 are invalid, they must do so by the more stringent
clear and convincing standard. Titan Tire Corp. v. Case New Holland, Inc., 566 F.3d
1372, 1376 (Fed. Cir. 2009). The Court is reluctant to apply collateral estoppel in this
situation.
Furthermore, the facts here present a unique situation that does not warrant
collateral estoppel. Unlike the circumstances in Intellectual Ventures, claims 5 and
19 here, which Defendants allege to be "materially identical" to the prior invalidated
claims 4 and 12, actually were adjudicated in the prior IPR. Cf. Intellectual Ventures,
370 F. Supp. 3d at 256–57. Defendants sought to invalidate those claims as obvious
in view of the Sackier prior art but were unsuccessful. (ECF No. 345-7 at 86.) Now,
they wish to preclude Plaintiffs from even disputing the invalidity of claims 5 and 19
because the claims depend from the now-invalidated claims 4 and 12 and because
claims 5 and 19 do not add a limitation that would materially alter the invalidity
analysis. The Court struggles to see how such an application of the collateral estoppel
doctrine would be just, particularly because it cannot be said that claims 5 and 19
were "unadjudicated." Plaintiffs should not be precluded from disputing invalidity

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here when they successfully did so at the IPR, even if the invalidity challenge was on
a different ground (i.e., Sackier alone rather than Sackier with other prior art). This
conclusion only means that Plaintiffs are not precluded from disputing invalidity.
Defendants can still argue invalidity using prior art that is not estopped, such as
through some of the physical devices previously discussed.
Accordingly, the Court will not collaterally estop Plaintiffs from disputing
invalidity as to the '731 claims.9
I. Summary
The Court grants in part and denies in part both parties' Motions for Summary
Judgment. (ECF Nos. 620 & 630.)
As to infringement of the '048 patent, the Court finds that the only surviving
claims are claims 7 and 14. All that remains is a genuine dispute as to whether the
housing of the Accused Products is an equivalent of a component of the "sheath" of
independent claim 1. The remaining claim limitations of claims 7 and 14 (and claim
1 on which they depend) are found in the Accused Products. For the remaining claims
of the '048 patent, summary judgment is granted in favor of Defendants.

Even if collateral estoppel applied, the Court would find that Defendants had not met their burden
of showing no genuine dispute as to materiality of the increased width limitation. While the evidence
weighs in favor of concluding that the increased width limitation is immaterial, Plaintiffs have
presented at least some genuine dispute as to materiality that precludes summary judgment. The
differentiation between Defendants' own devices suggests that there is some beneficial purpose to a
control wire with an increased width at the distal end. Namely, while the Instinct did not have a
control wire with an increased width portion, the Instinct Plus did; the '731 claims are thus only
asserted against the Instinct Plus. (Compare ECF No. 621-3 at 21 (Instinct Plus) with ECF No. 62142 (Instinct).) Defendants' arguments that the Instinct Plus and Instinct are not "materially different"
are not enough to extinguish a genuine dispute here. (See ECF No. 706 at 25.) The Instinct Plus is,
by all accounts, at the least a small improvement on the Instinct. Additionally, Defendants' own
documentation attributes some significance to the increased width of the control wire. (See ECF No.
674-65 at 9–11 (noting that the width of the drive wire will help keep the "drive wire and driver
engaged regardless of lateral movement").)
9

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As to infringement of the '371 patent, the Court grants Defendants' Motion for
Summary Judgment. All claims against Defendants asserted under the '371 patent
are dismissed.
As to infringement of the '731 patent, the Court grants Plaintiffs' Motion for
Summary Judgment. The Court finds that all pertinent limitations of claims 5 and
19 of the '731 patent are literally infringed by the Instinct Plus.
As to infringement under 35 U.S.C. §§ 271(b) and (c), the Court grants
Defendants' Motion for Summary Judgment.
As to infringement by Cook Group Incorporated, the Court grants Defendants'
Motion for Summary Judgment.
As to IPR estoppel, the Court finds that Defendants are estopped from using any
of the printed publications or patents listed in Section III.G.1.i and III.G.1.ii.
Additionally, Defendants are estopped from using the Marlow Nu-Tip physical
device to argue invalidity. Defendants may rely on any of the other asserted devices.
The Court denies Defendants' Motion for Summary Judgment as to collateral
estoppel. Plaintiffs may dispute invalidity of the '731 patent.
IV.

Conclusion

A. Motion to Preclude
For the reasons discussed above, Defendants' Motion to Preclude, (ECF No. 634),
is granted in part and denied in part.
Defendants' Motion as to Leinsing's cumulativeness opinions is denied.

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Defendants' Motion as to Lhymn's opinions that Defendants "knew" of the
existence of certain prior art is granted.
Defendants' Motion with regards to Mr. Lhymn's skilled searcher opinions is
denied.
Defendants' Motion as to Plaintiffs' new "link" infringement theory is denied.
B. Motions for Summary Judgment
The Court grants in part and denies in part both parties' Motions for Summary
Judgment. (ECF Nos. 620 & 630.)
As to infringement of the '048 patent, the Court finds that the only surviving
claims are claims 7 and 14. All that remains is a genuine dispute as to whether the
housing of the Accused Products is an equivalent of a component of the "sheath" of
independent claim 1. The remaining claim limitations of claims 7 and 14 (and claim
1 on which they depend) are found in the Accused Products. For the remaining claims
of the '048 patent, summary judgment is granted in favor of Defendants.
As to infringement of the '371 patent, the Court grants Defendants' Motion for
Summary Judgment. All claims against Defendants asserted under the '371 patent
are dismissed.
As to infringement of the '731 patent, the Court grants Plaintiffs' Motion for
Summary Judgment. The Court finds that all pertinent limitations of claims 5 and
19 of the '731 patent are literally infringed by the Instinct Plus.
As to infringement under 35 U.S.C. §§ 271(b) and (c), the Court grants
Defendants' Motion for Summary Judgment.

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As to infringement by Cook Group Incorporated, the Court grants Defendants'
Motion for Summary Judgment. The Clerk is ordered to terminate Cook Group
Incorporated from the case.
As to IPR estoppel, the Court finds that Defendants are estopped from using any
of the printed publications or patents listed in Section III.G.1.i and III.G.1.ii.
Additionally, Defendants are estopped from using the Marlow Nu-Tip physical
device to argue invalidity. Defendants may rely on the remaining physical devices.
The Court denies Defendants' Motion for Summary Judgment as to collateral
estoppel. Plaintiffs may dispute invalidity of the '731 patent.
SO ORDERED.

Date:01/31/2023

Distribution to registered counsel of record via CM/ECF.

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