PureWick Corporation v. Sage Products, LLC

District Court, D. Delaware·Decided February 17, 2021·No. 1:19-cv-01508·Unknown

Opinion

IN THE UNITED STATES DISTRICT COURT FOR THE DISTRICT OF DELAWARE

PUREWICK CORPORATION, ) ) Plaintiff, ) ) v. ) C.A. No. 19-1508 (MN) ) SAGE PRODUCTS, LLC, ) ) Defendant. )

MEMORANDUM ORDER

At Wilmington this 17th day of February 2021: IT IS HEREBY ORDERED that the claim terms of U.S. Patents No. 8,287,508 (“the ’508 Patent”) and No. 10,376,407 (“the ’407 Patent) with agreed-upon constructions are construed as follows (see D.I. 117 at 3, 11): 1. “an elongated exterior of the container” / “an elongated container” needs no construction and will be given its plain meaning (’508 Patent, claims 1, 17) 2. “hence inward” will be given its ordinary meaning (’407 Patent, claim 2) Further, as announced at the hearing on February 2, 2021, IT IS HEREBY ORDERED that the disputed claim terms of U.S. Patents No. 10,226,376 (“the ’376 Patent”), No. 10,390,989 (“the ’989 Patent”), and the ’508 and ’407 Patents are construed as follows: 1. “the container is closed, except for having an array of openings . . . and at least one outlet port . . .” / “container defining a chamber that is closed at both ends . . . and having an array of openings in an elongated side of the container . . . and at least one outlet port” need no construction. These phrases will be given their plain and ordinary meanings with the understanding that “closed” means “one way for liquid to come in, one way for liquid to go out, and the container holds liquid” (’508 Patent, claims 1, 17) 2. “array” means “a group of two or more” (’508 Patent, claims 1, 17) 3. “moisture-wicking article” / “wicking material” means “an article that moves moisture by capillary action from one surface of the article to the other” (’508 Patent, claims 1, 3-6, 17-19; ’376 Patent, claim 9; ’407 Patent, claims 1, 5, 7, 8, 10, 13-15) 4. “secured over the array of openings” means “held in place over the array of openings” with the clarification that the component to be secured must be held in place before the article is deployed and independent of deployment (’508 Patent, claims 1, 3, 17-18) 5. “casing having [or defining] a fluid reservoir at a first end [and] . . ., a fluid outlet at a second end . . .” means “an outer cover having [or defining] a fluid reservoir at a first end and a fluid outlet at a second end” (’376 Patent, claims 1, 11, 13, 14; ’989 Patent, claim 1) 6. “the chamber being defined at least partially by . . . the porous material and the . . . layer of impermeable material” / “the chamber being [partially] defined by a portion of the . . . porous material and a portion of the impermeable material” will be given their plain and ordinary meanings with the clarification to be at least partially defined by the porous material and the impermeable layer, the porous material and the impermeable layer must each touch the chamber at some point (’407 Patent, claims 1, 7, 13) 7. “a chamber [of/is void space] positioned” requires no construction and will be given its plain and ordinary meaning (’407 Patent, claims 1, 7, 9, 13) 8. “opening of the cavity” will be given its plain and ordinary meaning (’407 Patent, claim 7) The parties briefed the issues (see D.I. 105) and submitted a joint appendix that included the patents at issue, expert declarations, excerpts from the patents’ prosecution histories and an IPR and various types of extrinsic evidence (see D.I. 106; D.I. 107). Sage provided a tutorial describing the relevant technology. The Court carefully reviewed all submissions in connection with the parties’ contentions regarding the disputed claim terms, heard oral argument (see D.I. 127) and applied the following legal standards in reaching its decision: I. LEGAL STANDARDS “[T]he ultimate question of the proper construction of the patent [is] a question of law,” although subsidiary fact-finding is sometimes necessary. Teva Pharms. USA, Inc. v. Sandoz, Inc., 135 S. Ct. 831, 837-38 (2015). “[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.” Phillips v. AWH Corp., 415 F.3d 1303, 1312-13 (Fed. Cir. 2005) (en banc) (internal citations and quotation marks omitted). Although “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. Id. at 1314. “[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 . . . [as] 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). 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. “Even when the specification describes only a single embodiment, [however,] 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.” Hill-Rom Servs., Inc. v. Stryker Corp., 755 F.3d 1367, 1372 (Fed. Cir. 2014) (internal quotation marks omitted) (quoting Liebel-Flarsheim Co. v. Medrad, Inc., 358 F.3d 898, 906 (Fed. Cir. 2004)). In addition to the specification, a court “should also consider the patent’s prosecution history, if it is in evidence.” Markman v. Westview Instruments, Inc., 52 F.3d 967, 980 (Fed. Cir. 1995) (en banc), aff’d, 517 U.S. 370 (1996). The prosecution history, which is “intrinsic evidence, . . . consists of the complete record of the proceedings before the PTO [Patent and Trademark Office] and includes the prior art cited during the examination of the 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.” Id.

In some cases, courts “will need to look beyond the patent’s intrinsic evidence and to consult extrinsic evidence in order to understand, for example, the background science or the meaning of a term in the relevant art during the relevant time period.” Teva, 135 S. Ct. at 841. Extrinsic evidence “consists of all evidence external to the patent and prosecution history, including expert and inventor testimony, dictionaries, and learned treatises.” Markman, 52 F.3d at 980. 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 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.” Phillips, 415 F.3d at 1318.

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PureWick Corporation v. Sage Products, LLC, (D. Del. 2021).

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