Avanir Pharmaceuticals Inc. et al v. Actavis South Atlantic LLC et al
Filing
256
MEMORANDUM OPINION re claim construction. Signed by Judge Leonard P. Stark on 12/3/12. (ntl)
IN THE UNITED STATES DISTRICT COURT
FOR THE DISTRICT OF DELAWARE
AVANIR PHARMACEUTICALS, INC.,
AVANIR HOLDING COMPANY, AND
CENTER FOR NEUROLOGIC STUDY,
Plaintiffs,
v.
ACTAVIS SOUTH ATLANTIC LLC,
ACTAVIS, INC., PAR PHARMACEUTICAL,
INC., PAR PHARMACEUTICAL
COMPANIES, INC., IMP AX
LABORATORIES, INC., WOCKHARDT,
LTD., WOCKHARDTUSA, LLC, WATSON
PHARMACEUTICALS, INC., WATSON
LABORATORIES, INC., AND WATSON
PHARMA, INC.,
C.A. No. 11-704-LPS
(CONSOLIDATED)
Defendants.
Jack B. Blumenfeld, Maryellen Noreika, MORRIS, NICHOLS, ARSHT & TUNNELL, LLP,
Wilmington, DE
F. Dominic Cerrito, Eric Stops, Daniel Wiesner, QUINN EMANUEL URQUHART &
SULLIVAN, LLP, New York, NY
Attorneys for Plaintiffs.
Dominick T. Gattuso, Melissa N. Donimirski, PROCTOR HEYMAN LLP, Wilmington, DE
Charles B. Klein, WINSTON & STRAWN LLP, Washington, D.C.
SamuelS. Park, EmilyN. Winfield, WINSTON & STRAWN LLP, Chicago, IL
Attorneys for Defendants Actavis South Atlantic LLC and Actavis Inc.
Steven J. Fineman, Jaclyn C. Levy, RICHARDS, LAYTON & FINGER P.A., Wilmington, DE
Richard J. Berman, Janine A. Carlan, Aziz Burgy, Amy E.L. Schoenhard, Timothy W. Bucknell,
Taniel E. Anderson, ARENT FOX LLP, Washington, D.C.
Attorneys for Defendants Par Pharmaceutical, Inc. and Par Pharmaceutical
Companies, Inc.
John C. Phillips, Jr., Megan C. Haney, PHILLIPS, GOLDMAN & SPENCE, P.A., Wilmington,
DE
Eric H. Weisblatt, Mark A. Pacella, Robert J. Scheffel, WILEY REIN LLP, Washington, D.C.
Attorneys for Defendant Impax Laboratories, Inc.
Matt Neiderman, Benjamin A. Smyth, DUANE MORRIS LLP, Wilmington, DE
Frederick R. Ball, Anthony J. Fitzpatrick, Vincent L. Capuano, Carolyn A. Alenci, DUANE
MORRIS LLP, Boston, MA
Attorneys for Defendants Wockhardt, Ltd. and Wockhardt USA, LLC.
Richard L. Horwitz, David E. Moore, POTTER ANDERSON & CORROON, LLP, Wilmington,
DE
Ralph J. Gabric, Laura A. Lydigsen, Yuezhong Feng, Danielle C. Cendrowski, BRINKS HOFER
GILSON & LIONE, Chicago, IL
Attorneys for Defendants Watson Pharmaceuticals, Inc., Watson Laboratories, Inc.,
and Watson Pharma, Inc.
MEMORANDUM OPINION
December 3, 2012
Wilmington, Delaware.
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tL-v?o ty:
STARK, U.S. District Judge:
Avanir Pharmaceuticals, Inc., Avanir Holding Company, and Center for Neurologic
Study (collectively, "Avanir" or "Plaintiffs") filed this patent infringement action against Actavis
South Atlantic LLC, Actavis, Inc., Par Pharmaceutical, Inc., Par Pharmaceutical Companies, Inc.,
Impax Laboratories, Inc., Wockhardt, Ltd.,Wockhardt USA, LLC, Watson Pharmaceuticals, Inc.,
Watson Laboratories, Inc., and Watson Pharma, Inc. (collectively, "Defendants") on August 10,
2011. 1 (D.I.1)
Pending before the Court is the issue of claim construction of various disputed terms
found in U.S. Patent Nos. RE38,115 (the '"115 patent") and 7,659,282 (the "'282 patent"). The
'115 patent relates to formulations containing dextromethorphan and quinidine, the active
ingredients of Avanir's Nuedexta® product. The '282 patent relates to the use of
dextromethorphan and quinidine for the treatment of a neurological disorder.
The parties completed briefing on claim construction on September 14, 2012. (D.I. 116,
118, 138, 139) The Court held a Markman hearing on October 5, 2012. See Markman Hr'g Tr.,
October 5, 2012 (D.I. 168) (hereinafter "Tr.").
LEGAL STANDARDS
"It is a bedrock principle of patent law that the claims of a patent define the invention to
which the patentee is entitled the right to exclude." Phillips v. AWH Corp., 415 F.3d 1303, 1312
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Civil Action No. 11-704 against defendants Actavis South Atlantic LLC and Actavis,
Inc.; Civil Action No. 11-705 against defendants Par Pharmaceutical, Inc. and Par
Pharmaceutical Companies, Inc.; Civil Action No. 11-757 against defendant Impax Laboratories,
Inc.; and Civil Action No. 11-758 against defendants Wockhardt, Ltd. and Wockhardt USA, LLC
were consolidated on September 26, 2011. Defendants Watson Pharmaceuticals, Inc., Watson
Laboratories, Inc., and Watson Pharma, Inc. were added on July 11, 2012. (D.I. 21; D.I. 103)
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(Fed. Cir. 2005) (internal quotation marks omitted). Construing the claims of a patent presents a
question oflaw. See Markman v. Westview Instruments, Inc., 52 F.3d 967, 977-78 (Fed. Cir.
1995), aff'd, 517 U.S. 370, 388-90 (1996). "[T]here is no magic formula or catechism for
conducting claim construction." Phillips, 415 F.3d at 1324. Instead, the court is free to attach
the appropriate weight to appropriate sources "in light of the statutes and policies that inform
patent law." Id.
"[T]he words of a claim are generally given their ordinary and customary meaning ...
[which is] the meaning that the term would have to a person of ordinary skill in the art in
question at the time of the invention, i.e., as of the effective filing date of the patent application."
Id. at 1312-13 (internal citations and quotation marks omitted). "[T]he ordinary meaning of a
claim term is its meaning to the ordinary artisan after reading the entire patent." Id. at 1321
(internal quotation marks omitted). The patent specification "is always highly relevant to the
claim construction analysis. Usually, it is dispositive; it is the single best guide to the meaning of
a disputed term." Vitronics Corp. v. Conceptronic, Inc., 90 F.3d 1576, 1582 (Fed. Cir. 1996).
While "the claims themselves provide substantial guidance as to the meaning of particular
claim terms," the context of the surrounding words of the claim also must be considered.
Phillips, 415 F .3d at 1314. Furthermore, "[o]ther claims of the patent in question, both asserted
and unasserted, can also be valuable sources of enlightenment ... [b ]ecause claim terms are
normally used consistently throughout the patent .... " Id. (internal citation omitted).
It is likewise true that "[d]ifferences among claims can also be a useful guide .... For
example, the presence of a dependent claim that adds a particular limitation gives rise to a
presumption that the limitation in question is not present in the independent claim." !d. at 13142
15 (internal citation omitted). This "presumption is especially strong when the limitation in
dispute is the only meaningful difference between an independent and dependent claim, and one
party is urging that the limitation in the dependent claim should be read into the independent
claim." SunRace Roots Enter. Co., Ltd. v. SRAM Corp., 336 F.3d 1298, 1303 (Fed. Cir. 2003).
It is also possible that "the specification may reveal a special definition given to a claim
term by the patentee that differs from the meaning it would otherwise possess. In such cases, the
inventor's lexicography governs." Phillips, 415 F.3d at 1316. It bears emphasis that "[e]ven
when the specification describes only a single embodiment, the claims of the patent will not be
read restrictively unless the patentee has demonstrated a clear intention to limit the claim scope
using words or expressions of manifest exclusion or restriction." Liebel-Flarsheim Co. v.
Medrad, Inc., 358 F.3d 898, 906 (Fed. Cir. 2004) (intenial quotation marks omitted), aff'd, 481
F.3d 1371 (Fed. Cir. 2007).
In addition to the specification, a court "should also consider the patent's prosecution
history, if it is in evidence." Markman, 52 F.3d at 980. The prosecution history, which is
"intrinsic evidence," "consists of the complete record ofthe proceedings before the PTO [Patent
and Trademark Office] and includes the prior art cited during the examination ofthe patent."
Phillips, 415 F .3d at 1317. "[T]he prosecution history can often inform the meaning of the claim
language by demonstrating how the inventor understood the invention and whether the inventor
limited the invention in the course of prosecution, making the claim scope narrower than it would
otherwise be." !d.
A court also may rely on "extrinsic evidence," which "consists of all evidence external to
the patent and prosecution history, including expert and inventor testimony, dictionaries, and
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learned treatises." Markman, 52 F.3d at 980. For instance, technical dictionaries can assist the
court in determining the meaning of a term to those of skill in the relevant art because such
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dictionaries "endeavor to collect the accepted meanings of terms used in various fields of science
and technology." Phillips, 415 F.3d at 1318. In addition, expert testimony can be useful ''to
ensure that the court's understanding of the technical aspects of the patent is consistent with that
of a person of ordinary skill in the art, or to establish that a particular term in the patent or the
prior art has a particular meaning in the pertinent field." Id. Nonetheless, courts must not lose
sight of the fact that "expert reports and testimony [are] 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.
Overall, while extrinsic evidence "may be useful" to the court, it is "less reliable" than intrinsic
evidence, and its consideration "is unlikely to result in a reliable interpretation of patent claim
scope unless considered in the context ofthe intrinsic evidence." I d. at 1318-19.
Finally, "[t]he construction that stays true to the claim language and most naturally aligns
with the patent's description of the invention will be, in the end, the correct construction."
Renishaw PLC v. Marposs Societa' Per Azioni, 158 F.3d 1243, 1250 (Fed. Cir. 1998). It follows
that "a claim interpretation that would exclude the inventor's device is rarely the correct
interpretation." Osram GmbH v. Int'l Trade Comm 'n, 505 F.3d 1351, 1358 (Fed. Cir. 2007).
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CONSTRUCTION OF DISPUTED TERMS
I.
The '115 Patent
Claim 18 ofthe '115 patent, with the disputed terms highlighted, is as follows:
A unit dosage formulation for treatment of chronic or intractable
pain, comprising: (a) dextromethorphan or a pharmaceutically
acceptable salt thereof, and, (b) a debrisoquin hydroxylase
inhibitor, in a combined form that is designed for oral ingestion
by humans, wherein the dextromethorphan or salt thereof and
the debrisoquin hydroxylase inhibitor are present at a combined
dosage which renders the dextromethorphan therapeutically
effective in substantially reducing chronic or intractable pain,
without causing unacceptable side effects.
A.
"A unit dosage formulation for treatment of chronic or intractable pain"
Plaintiffs' Proposed Construction: The preamble is not a claim limitation; needs
no construction.
Defendants' Proposed Construction: "A unit dosage formulation intended to treat
chronic or intractable pain"
Court's Construction: The preamble is not a claim limitation; needs no
construction.
The parties disagree on whether this disputed term, the preamble of claim 18, is a
limitation of the claim. The Court is persuaded by Plaintiffs' argument that the preamble is not a
limitation and, therefore, does not require construction.
"No litmus test defines when a preamble limits claim scope." Catalina Mktg. Int'l v.
Coolsavings.com, 289 F.3d 801, 808 (Fed. Cir. 2002). Nonetheless, Catalina established several
factors for courts to consider in determining the effect of a preamble. For example, "a preamble
is not limiting where a patentee defines a structurally complete invention in the claim body and
uses the preamble only to state the purpose or intended use for the invention." !d. (internal
quotation marks omitted). Plaintiffs assert, and the Court agrees, that the body of claim 18
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provides a structurally complete formulation of the invention. The deletion of the preamble
would not change the claimed invention.
Other of the Catalina guideposts are also not satisfied. The preamble does not recite an
essential structure, is not essential to understanding the claim body, and is not necessary to give
meaning to the claim. See Catalina, 289 F.3d 801 at 808. Nor have Defendants provided
evidence of "clear reliance on the preamble during prosecution to distinguish the claimed
invention from prior art .... " !d.
A preamble may also be a claim limitation when it adds, limits, or otherwise further
defines the subject matter of the invention. See Bell Commc 'ns Research, Inc. v. Vita link
Commc 'ns Corp., 55 F.3d 615, 620 (Fed. Cir. 1995). Here, again, as the deletion of the preamble
has no effect on the scope of the claim, it is not limiting.
B.
"A debrisoquin hydroxylase inhibitor"
Plaintiffs' Proposed Construction: "A cytochrome P-450 2D6 inhibitor, excluding
cimetidine"
Defendants' Proposed Construction: "A compound capable of inhibiting the
oxidation of dextromethorphan by the liver enzyme debrisoquin hydroxylase"
Court's Construction: "A compound capable of inhibiting the oxidation of
dextromethorphan by the liver enzyme debrisoquin hydroxylase, excluding
cimetidine"
The parties raise two disputes: "(1) whether the specification's lexicography controls; and
(2) whether cimetidine should be included as a debrisoquin hydroxylase inhibitor ('DHI')." (D.L
138 at 10)2
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Plaintiffs suggest that only the second of these is really an issue, contending that the
parties' constructions are "substantially similar" so the only dispute is whether cimetidine is
excluded. (D.L 139 at 14)
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On the first issue, the Court agrees with Defendants that the specification's lexicography
controls. The '115 specification states that the "particular enzyme primarily responsible for DM
[dextromethorphan] oxidation is debrisoquin hydroxylase" and then lists several of its synonyms.
(See '115 patent col. 3 ll. 51-55) The "Definitions" section of the specification defines
"oxidative inhibitors" as referring to "inhibitors capable of inhibiting the oxidation ofDM by the
liver enzyme debrisoquin hydroxylase." (See id. at col. 2 ll. 22-25) Defendants' construction
properly tracks this comprehensive definition as stated in the specification and the Court adopts
it.
On the second issue, the Court agrees with Plaintiffs that the prosecution history supports
excluding cimetidine. In an office action, the PTO rejected the patentees' claims pursuant to 35
U.S.C. § 102 based on a prior art patent disclosing dextromethorphan in combination with·
cimetidine. (D.I. 110 Ex. Cat AVAN-0002144-45) In response, the patentees stated that "all
references to cimetidine as a debrisoquin hydroxylase inhibitor have been deleted." (!d. at
AVAN-0002145) Thereafter, all references to cimetidine were removed from the original claim
language. (Tr. at 101-02) The Court is persuaded that the patentees made a "clear and
unmistakable disclaimer" ofcimetidine. See Omega Eng'g, Inc. v. Raytek Corp., 334 F.3d 1314,
1325-26 (Fed. Cir. 2003).
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C.
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"A combined dosage which renders the dextromethorphan therapeutically
effective in substantially reducing crronic or intractable pain without
causing unacceptable side effects"
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Plaintiffs' Proposed Construction: Tht is not a single claim term and is not
amenable to construction; instead, it s ould be construed by reference to the
individual claim term contained there· n:
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(1) "a combined dosage;"
(2) "which renders;"
(3) "the dextromethorphan;"
(4) "therapeutically effective, "I
(5) "in,"
(6) "substantially reducing,"
(7) "chronic pain,"
(8) "intractable pain," and
(9) "without causing unaccept~ble side effects."
Avanir asserts that except for !'chronic pain" and "intractable pain" (as
separately defined) each of th~se terms needs no construction and has its
·
ordinary meaning.
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"About 20 mg/day to about 200 mg/day of
Defendants' Proposed Constructions:~
dextromethorphan or salt thereof and 0 mg/day to 300 mg/day of the debrisoquin
hydroxylase inhibitor (DHI) quinidin for treatment of chronic or intractable pain.
Dosages of other DHis will vary with the DHI, and should be determined on an
individual basis using the protocol de~cribed in Example 4."
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To the extent Defendants' constru~cio' is not adopted and "substantially reducing
chronic or intractable pain" needs
er construction, it is indefinite and/or does
not otherwise satisfy the requirement of35 U.S.C. § 112.
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To the extent Defendants' constructi~· is not adopted and "without causing
unacceptable side effects" needs furt r construction, it is indefinite and/or does
not otherwise satisfy the requirement of35 U.S.C. § 112.
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Court's Construction: No constructioq necessary. Plain and ordinary meaning.
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"[W]hen a claim term is expressed in general (descriptive words, we will not ordinarily
limit the term to a numerical range that may appear iljl the written description or in other claims."
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Conoco, Inc. v. Energy & Envtl. Int'l, L.C., 460 F.3dl1349, 1358 (Fed. Cir. 2006). Here,
adopting Defendants' proposed dosage of quinidine qfbetween 50 mg/day to 300 mg/day would
lead to the improper result of independent claim 18 hjaving narrower claim scope than dependent
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claim 21, which depends from claim 18. Dependent ~laim 21 claims a dosage of quinidine of
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300 mg/day or less, a range that would include 0 to 4P mg/day. Defendants' construction,
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however, would mean that claim 18 is limited to dostges of quinidine no lower than 50 mg/daythat is, narrower claim scope than claim 21.
The Court is also unpersuaded by Defendantsi' contention that language such as "this
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invention" or "the present invention" in the patent's ~pecification limits the claims to the precise
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scope proposed by Defendants. The terms "this inveption" or "the present invention" are used in
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the patent more than ten times, yet Defendants find
t~e
terms to be limiting of claim scope only
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twice. In those two instances- "[t]his invention an~cipates" and "[t]he present invention
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contemplates" certain dosages (' 115 patent col. 4 11. ~-11, 26-29) (emphasis added)- the terms
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are not used in a manner suggestive of comprehensi~e descriptions of the scope of the invention
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as a whole. See Verizon Servs. Corp. v. Vonage Hol¥ings Corp., 503 F.3d 1295, 1308 (Fed. Cir.
2007).
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Defendants alternatively propose that two te*s within the larger term require
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construction: "substantially reducing chronic or intraftable pain" and "without causing
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unacceptable side effects."3 Defendants further cont,nd that these two terms are invalid due to
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indefiniteness. The Court is not persuaded. See gen~rally Personalized User Model LLP v.
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Google, Inc., 2012 WL 295048, at *22 (D. Del. Jan.
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2012) (stating Court "does not permit
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summary judgment arguments, including indefiniten~ss arguments, during the claim construction
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phase of the litigation"). A claim is "sufficiently de~nite to survive claim construction" unless
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the term is "insolubly ambiguous." Halliburton Enekgy Servs., Inc. v. M-I LLC, 514 F.3d 1244,
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1249-50 (Fed. Cir. 2008); see also Pharmastem Therppeutics, Inc. v. Viacell, Inc., 2003 WL
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124149, at *1 n.1 (D. Del. Jan. 13, 2003). Defendants have failed to establish "by clear and
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convincing evidence that a skilled artisan could not 4iscern the boundaries of the claim based on
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the claim language, the specification, and the prosec*ion history, as well as her knowledge of the
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relevant art area." Halliburton, 514 F.3d at 1249. T? the contrary, the Court construes these
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terms by adopting their plain and ordinary meaning, ivhich is appropriate here as there is no basis
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in the claims, specification, or prosecution history to Idepart from the plain and ordinary meaning
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of these terms. See Thorner v. Sony Computer Ente1ainment Am. LLC, 669 F.3d 1362, 1365-66
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(Fed. Cir. 2012).
The parties previously disputed the terms "cltonic pain" and "intractable pain." After the
hearing, the parties agreed to the meaning ofthese tepns. (D.I. 165) "Chronic pain" will be
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construed to mean "long-term pain resulting from copditions such as stroke, cancer and trauma,
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Defendants' suggestion that this Court's dection in construing an entirely unrelated
patent, in response to arguments made by parties wit no connection to the instant dispute,
should lead the Court to a similar conclusion here is navailing. (See D.I. 138 at 6-7) (citing
Cadence Pharm., Inc. v. Paddock Labs Inc., 2012 W 3609687, at *5 (D. Del. Aug. 22, 2012))
(construing entire phrase, rather than terms within it, I to better preserve coherence of patent and
reduce risk of inconsistencies)
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as well as neuropathic pain due to deterioration of nerve tissue such as postherpetic neuralgia
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(PHN) resulting from herpes zoster infection, and di~betic neuropathy resulting from long-time
diabetes. The conditions are not an exclusive list." '(Intractable pain" will be construed to mean
"pain which failed to respond adequately to conventipnal treatments."
II.
The '282 Patent
Claim 1 of the '282 patent, highlighted to shdw the terms in dispute, is as follows:
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A method for treating pseudobulbar iffect or emotional/ability,
the method comprising administering o a patient in need thereof
dextromethorphan in combination "th quinidine, wherein the
amount of dextromethorphan adminis ered comprises from about
20 mg/day to about 80 mg/day and wrerein the amount of
quinidine administered comprises fro about 10 mg/day to less
than about 30 mg/day with the provis that the weight to weight
ratio of dextromethorphan to quinidin, is 1:0.5 or less.
A.
"A method for treating pseudobulb~r affect or .emotional lability"
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Plaintiffs' Proposed Construction: "A~, method for treating a neurological disorder
characterized by intermittent spasmo ic outbursts of emotion at inappropriate
times or in the absence of any particu ar provocation"
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Defendants' Proposed Construction:' A method for treating the condition known
as pseudobulbar affect or emotional! bility (also referred to by the terms
emotionalism, emotional incontinenc , emotional discontrol, excessive
emotionalism, and pathological laugh ng and crying), which is characterized by
intermittent spasmodic emotional out ursts at inappropriate times or in the
absence of any particular provocation '
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Court's Construction: "A method for~reating a neurological disorder
characterized by intermittent spasmo ic outbursts of emotion at inappropriate
times or in the absence of any particu ar provocation"
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The parties have two disputes: (1) whether thF construction should include neurological
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disorders characterized by specific symptoms, and
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(~) whether the construction should include
synonyms ofthe condition. 4 The Court agrees with ~laintiffs on both issues.
The term "neurological disorders" is found inithe specification. The Field oflnvention
states that "compositions and methods for treating ne(urological disorders are provided." ('282
patent col. 1 11. 18-19) Likewise, the patent is entitlep, "Pharmaceutical Compositions ... for the
Treatment ofNeurological Disorders." The parties akree that pseudobulbar affect or emotional
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lability is a neurological disorder characterized in thd patent as "intermittent spasmodic outbursts
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of emotion at inappropriate times or in the absence of any particular provocation." (See id. at col.
111. 18-19; Tr. at 136, 139) The Court's constructiotit properly identifies pseudobulbar affect and
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emotional lability as neurological disorders characte1zed by the agreed upon symptoms, thus
"stay[ing] true to the claim language and most natur~lly align[ing] with the patent's description
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ofthe invention." Phillips, 415 F.3d at 1315.
In the context of this patent claim term, inclu~ing a list of synonyms is not helpful.
Defendants' contention that failing to list the synon$s truncates the specification's definition is
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unconvincing. The specification defines emotionall~bility as "characterized by intermittent
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spasmodic outbursts of emotion ... at inappropriate hmes or in the absence of any particular
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provocation." ('282 patent col. 111. 39-40) The spe¢ification then goes on to list synonyms of
the condition, but the synonyms are not part of the d~finition. (See id. at col. 1 11. 44-4 7)
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The parties agree that this preamble is limiti*g, although they do not agree on the reason
why it is limiting. (D.I. 116 at 17; D.l. 138 at 15-17;i Tr. at 138)
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B.
"Dextromethorphan in combinatio~ with quinidine"
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Plaintiffs' Proposed Construction: "Dfxtromethorphan and quinidine given in a
combined dose, or in separate doses a&ninistered substantially simultaneously"
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Defendants' Proposed Construction: 'IDextromethorphan and quinidine coadministered in combined or separate~ doses"
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Court's Construction: "Dextromethorj>han and quinidine given in a
combined dose, or in separate doses a~ministered substantially simultaneously"
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The parties agree that dextromethorphan and
~uinidine can be administered together or
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separately, but disagree on how the separate doses m~y be administered. The Court agrees with
Plaintiffs that separate doses may be administered su~stantially simultaneously.
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The Court's construction is supported by the ~pecification and evidence cited in the
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patent. The specification states that separate doses ate "administered substantially
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simultaneously" or "simultaneously." ('282 patent crl. 15 ll. 20-22, 40-41) While the
specification also uses the term "co-administration," lthis term is not contained in the claims, and
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the Court sees no reason to narrow the claims to req~ire co-administration.
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IV.
CONCLUSION
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For the foregoing reasons, the Court will conttrue the claim terms in the '115 and '282
patents consistent with this Memorandum Opinion. ~ appropriate Order follows.
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