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Federal Circuit

Detour Ahead: New Approach to Assessing Prior Art Rejections Under § 102(e)

by Benjamin Ediger, Ph.D. | Apr 3, 2025 | America Invents Act, Patents

The US Court of Appeals for the Federal Circuit established a more demanding test for determining whether a published patent application claiming priority to a provisional application is considered prior art under pre-America Invents Act (AIA) 35 U.S.C. § 102(e) as of the provisional filing date, explaining that all portions of the published patent application that are relied upon by the US Patent & Trademark Office (PTO) to reject the claims must be sufficiently supported in the provisional application. In re Riggs, Case No. 22-1945 (Fed. Cir. Mar. 24, 2025) (Moore, Stoll, Cunningham, JJ.)

Several inventors who work for Odyssey Logistics filed a patent application directed to logistics systems and methods for the transportation of goods from various shippers by various carriers across different modes of transport (e.g., by rail, truck, ship, or air). PTO rejected the application under § 102(e) in view of Lettich, which claimed the benefit of a provisional application (Lettich provisional), and as obvious in view of Lettich in combination with the Rojek reference.

The inventors appealed the Lettich rejections to the Patent Trial & Appeal Board, arguing that Lettich did not qualify as prior art under § 102(e). The Board initially agreed with the inventors, but the Examiner assigned to the application requested a rehearing, asserting that the Board applied the incorrect standard for § 102(e) prior art. The Board ultimately issued its decision on the Request for Rehearing, stating that it had jurisdiction over the Examiner’s request and that the Examiner’s arguments regarding Lettich’s status as prior art under § 102(e) “[we]re well taken.” The Board amended its original decision “to determine that Lettich is proper prior art against the instant claims.” The Board then reviewed and affirmed the Examiner’s anticipation and obviousness rejections. The inventors appealed.

The Federal Circuit vacated and remanded the Board’s decision. With respect to whether Lettich qualified as § 102(e) prior art, the Court found that the Board’s analysis was incomplete. The Court concluded that the Board correctly applied the test set forth in the Federal Circuit’s 2015 decision in Dynamic Drinkware v. National Graphics by determining that the Lettich provisional supported at least one of Lettich’s as-published claims. However, the Court found that this test was insufficient because all portions of the disclosure that are relied upon by the PTO to reject the claims must also be sufficiently supported in the priority document. Although the PTO asserted that the Board had conducted this additional analysis, the Federal Circuit disagreed and vacated and remanded for the Board to determine whether the Lettich provisional supported the entirety of the Lettich disclosure that the Examiner relied on in rejecting the claims.

Hatch-Waxman Litigation Expenses Are Deductible Under Internal Revenue Code § 162(a)

by Matthew J. Blaney | Apr 3, 2025 | Life Sciences

The US Court of Appeals for the Federal Circuit upheld a US Court of Federal Claims ruling that Hatch-Waxman Act litigation expenses are ordinary and necessary business expenses under § 162(a) of the Internal Revenue Code, entitling an abbreviated new drug application (ANDA) filer to deduct litigation expenses incurred defending against a patent infringement lawsuit. Actavis Labs. FL, Inc. v. United States, Case No. 23-1320 (Fed. Cir. Mar. 21, 2025) (Chen, Cunningham, Stark, JJ.)

Actavis filed ANDAs with the US Food and Drug Administration (FDA) seeking approval to market and sell a generic version of a drug already offered for sale in the United States. Per the Hatch-Waxman Act, filing an ANDA is an act of patent infringement where the ANDA holder seeks FDA approval prior to the expiration of the new drug application (NDA) holder’s patent. Following Actavis’s filing, the NDA holder brought a patent infringement lawsuit against Actavis.

Actavis subsequently treated litigation expenses incurred in defending the patent infringement lawsuit as ordinary and necessary expenses. Actavis deducted those litigation expenses on its tax returns for that year. However, the Internal Revenue Service (IRS) considered these expenses to be nondeductible capital expenditures since they were incurred “in pursuit of an intangible capital asset: namely, FDA approval to lawfully market a generic drug product in this country.”

Actavis eventually paid its tax liability but then sued the IRS in the Court of Federal Claims to recover what Actavis considered an overpayment of its taxes. The claims court agreed with Actavis, holding that Hatch-Waxman litigation expenses were deductible as ordinary and necessary business expenses. The IRS appealed.

The Federal Circuit affirmed. When determining whether Hatch-Waxman litigation expenses are deductible under Code § 162(a), the Federal Circuit uses two tests to settle the issue: the “origin of the claim” test and the “most significant benefit” test. However, as the Court emphasized, regardless of which test applied, Actavis prevailed.

The Federal Circuit first explained that Actavis prevailed under either test because patent infringement (not the FDA approval process) is what triggers incurring litigation expenses. Further evidence that the “origin of the claim rests in the patentholder’s decision to sue, and not in the ANDA filer’s decision to seek drug approval from the FDA, is the fact that infringement litigation cannot provide the ANDA filer what it wants – only the FDA can,” the Court stated.

Relying on the Third Circuit’s 2023 decision in Mylan v. Comm’r of Internal Revenue, the Federal Circuit delved into the fairness aspect of allowing Hatch-Waxman litigation expenses to be deductible. Citing Mylan, the Court explained that generic manufacturers defending against patent infringement suits “obtain no rights from a successful outcome. They acquire neither the intangible asset of a patent nor an FDA approval.” The Court also noted that brand-name drug companies in Hatch-Waxman lawsuits may deduct litigation expenses incurred while enforcing their patent rights. “[I]mposing very different tax treatment on the warring sides in an ANDA dispute, as the Commissioner advocates, is at odds with the careful statutory [...]

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The Clear and Unmistakable Standard for Applying Prosecution Disclaimer

by Sarah Mezini | Apr 3, 2025 | Patents

The US Court of Appeals for the Federal Circuit found that a district court misconstrued claim terms based on a misapplication of the clear and unequivocal disavowal standard and vacated its noninfringement decision. Maquet Cardiovascular LLC v. Abiomed Inc., Abiomed R&D, Inc., Abiomed Europe GMBH, Case No. 23-2045 (Fed. Cir. Mar. 21, 2025) (Reyna, Taranto, Cunningham, JJ.)

Maquet owns a patent related to a system that provides greater precision in deploying a blood pump to a patient’s circulatory system. The district court construed three patent terms. The district court construed the term “guide mechanism comprising a lumen” to include a negative limitation that the guidewire lumen “is not distal to the cannula.” The court justified this limitation by citing to the prosecution history of a related patent where Maquet disclaimed the broader claim by merely accepting the examiner’s proposed revisions. The district court also construed both guide wire terms in two other claims to include another negative limitation: “the guide wire does not extend through the free space in between the rotor blades.” The district court similarly justified this negative limitation by citing to the parent patent’s prosecution history, finding that Maquet had given up a broader version of the claim. The district court’s construction effectively limited the scope of Maquet’s claims to exclude the accused products, and the parties stipulated to the entry of a final appealable judgment of noninfringement. Maquet appealed.

Maquet argued that the district court erred in its construction of the three terms by misapplying the law of prosecution disclaimer. The Federal Circuit agreed, finding that the district court incorrectly relied on Maquet’s prosecution history to reach its conclusions on claim construction. The district court cited to an amendment made in a different (but related) patent prosecution and a different claim. The Federal Circuit explained that although the prosecution history of a related patent may be relevant, the claim limitations in the two applications must be similar in order for the prosecution disclaimer doctrine to apply. Here, the Court found that the amendment in the related patent was not sufficiently similar to the limitation at issue to constitute a disclaimer for the claim at issue. The related case claim did not claim a guide mechanism, nor did it require the lumen be in a specific position. The Federal Circuit found that the district court erred in its construction by improperly applying prosecution disclaimer.

The Federal Circuit also determined that the district court erred in its construction of the guide wire claim terms by applying prosecution disclaimer and interpreting a restriction on their scope. The Court found that while the prosecution history of the parent patent’s claims was sufficiently similar and thus relevant, Maquet did not disavow either claim’s scope during the relevant prosecution. The Court noted that mere silence in response to a notice of allowance typically does not rise to clear and unmistakable claim disavowal. The Court also observed that statements made during an inter partes review (IPR) proceeding may be used to support a [...]

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Zone of Natural Expansion Is a Shield, Not a Sword

by Hannah Hurley | Mar 27, 2025 | Trademarks

The US Court of Appeals for the Federal Circuit upheld a Trademark Trial & Appeal Board decision to partially cancel trademarks, ruling that an opposition challenger could not use the zone of natural expansion doctrine to claim priority because the doctrine is strictly defensive. Dollar Financial Group, Inc. v. Brittex Financial, Inc., Case No. 23-1375 (Fed. Cir. Mar. 19, 2025) (Prost, Taranto, Hughes, JJ.)

Dollar Financial Group (DFG) is a loan financing and check cashing business that has used the mark MONEY MART since the 1980s. In 2012, DFG expanded and started using the mark in connection with pawn brokerage and pawn shop services. DFG registered MONEY MART for these new services in 2014. Brittex petitioned to cancel the registration on several grounds, including that the registrations were improperly issued in violation of the Lanham Act, which bars registration of a mark that “so resembles . . . a mark or trade name previously used in the United States by another and not abandoned, as to be likely, when used on or in connection with the goods of the applicant, to cause confusion, or to cause mistake, or to deceive.” 15 U.S.C. § 1052(d). Brittex has operated pawn shops under the names Money Mart Pawn and Money Mart Pawn & Jewelry since the 1990s and claimed prior common law rights to the MONEY MART mark for pawn services.

The Board ruled in favor of Brittex, finding that Brittex had priority over DFG for pawn services due to its earlier use of the mark. The Board also determined that DFG could not rely on the zone of natural expansion doctrine to establish priority because this doctrine is purely defensive and does not grant a proactive right to register a mark on an expanded line of goods or services. The Board also concluded that there was a likelihood of confusion between the marks, given their high similarity and the overlapping nature of the services provided by both parties. DFG appealed.

The Federal Circuit agreed that Brittex had established priority because it was the first to use the MONEY MART mark in connection with pawn services. The Court also rejected DFG’s zone of natural expansion argument, reiterating that the doctrine is defensive and cannot be used to establish priority offensively.

The doctrine of natural expansion, as explained in Orange Bang v. Ole Mexican Foods (TTAB 2015), states that:

[T]he first user of a mark in connection with particular goods or services possesses superior rights in the mark as against subsequent users of the same or similar mark for any goods or services which purchasers might reasonably expect to emanate from it in the normal expansion of its business under the mark.

However, the doctrine does not give the senior mark user an offensive or proactive use.

The Federal Circuit also addressed DFG’s argument regarding the doctrine of tacking, which allows trademark holders to make minor modifications to their own mark while retaining the priority position of the older mark. Tacking is generally permitted [...]

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What’s the (Re)issue? Patent Term Extensions for Reissue Patents

by Connor M. Larson | Mar 27, 2025 | Patents

Addressing the calculation of patent term extensions (PTEs) under the Hatch-Waxman Act, the US Court of Appeals for the Federal Circuit affirmed a district court decision that under the act the issue date of the original patent should be used to calculate the extension, not the reissue date. Merck Sharp & Dohme B.V. v. Aurobindo Pharma USA, Inc., Case No. 23-2254 (Fed. Cir. Mar. 13, 2025) (Dyk, Mayer, Reyna, JJ.)

Merck owns a patent that is directed to a class of 6-mercapto-cyclodextrin derivatives. Four months after the patent issued, Merck applied to the US Food & Drug Administration (FDA) for approval of sugammadex, which it intended to market as Bridion®. During FDA’s review of Merck’s new drug application (NDA), Merck filed a reissue application that included narrower claims. The reissue application issued and included all the original claims and 12 additional claims. FDA regulatory review continued throughout the examination of the reissue application and extended almost two years beyond the date the patent reissued. In all, the FDA regulatory review lasted nearly 12 years.

The Hatch-Waxman Act provides owners of patents related to pharmaceutical products a process to extend the term of their patent rights to compensate for time lost during regulatory review of their NDAs. The act contains a clause providing that “the term of a patent . . . shall be extended by the time equal to the regulatory review period . . . occur[ring] after the date the patent is issued.” Having been unable to market the invention covered by the patent for almost 12 years because of FDA’s regulatory review, Merck filed a PTE application for its reissue patent seeking a five-year extension (the maximum allowed under the act) based on the patent’s original issue date. The US Patent & Trademark Office (PTO) agreed and granted the five-year extension.

Between the reissue date and the PTO’s grant of the five-year extension, Aurobindo and other generic manufacturers had filed abbreviated new drug applications (ANDAs) seeking to market generic versions of Bridion®. Merck sued for infringement. At trial, Aurobindo argued that the PTO improperly calculated the PTE by using the original issue date instead of the reissue date because only 686 days of FDA’s regulatory review occurred after the reissue date, as opposed to the almost 12 years which had passed since the initial issue date. The district court disagreed, finding that Aurobindo’s proposed construction “would undermine the purpose of the Hatch-Waxman Act.” Aurobindo appealed.

Aurobindo argued that the act’s reference to “the patent” referred to the reissue patent because that is the patent for which the patentee was seeking term extension. Merck argued that the act’s text, read in light of other patent statutes and the history of patent reissue, required the opposite conclusion (i.e., a PTE based on the original issue date).

The Federal Circuit agreed with Merck, explaining that while the language of the PTE text may be ambiguous, that ambiguity may be resolved by considering the PTE text in light of the history of [...]

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When “It’s Obvious” Just Isn’t Enough: Challenger’s Burden to Prove Obviousness

by Keval Amin | Mar 27, 2025 | Patents

The US Court of Appeals for the Federal Circuit affirmed the Patent Trial & Appeal Board’s decision that a patent was not obvious because the petitioner failed to show sufficient support of obviousness based on prior art. AMP Plus, Inc. v. DMF, Inc., Case No. 23-1997 (Fed. Cir. Mar. 19, 2025) (Lourie, Bryson, Reyna, JJ.)

DMF owns a patent directed to a compact recessed lighting system designed for installation in a standard electrical junction box. In 2019, AMP, doing business as ELCO, petitioned for inter partes review of several claims of the patent on three grounds of unpatentability:

Anticipation by a prior reference
Obviousness based on a combination of two references
Further obviousness based on an additional source.

The Board found that one claim was anticipated but ruled that ELCO failed to prove unpatentability of the other claims, including the claim at issue on appeal. The claim at issue describes a system with wires connected to a driver and a first connector, coupled to a second connector that in turn is connected to the building’s electrical system. This specific connection was referred to as “Limitation M.” ELCO appealed. In that earlier appeal (2022), the Federal Circuit affirmed the Board’s ruling on all claims except the claim at issue and remanded the case back to the Board for further analysis.

On remand, the Board concluded that ELCO failed to demonstrate the unpatentability of the claim at issue because ELCO’s petition lacked a substantive analysis of Limitation M. The Board found ELCO’s argument that a prior art marine lighting system could be adapted for the claimed building use unsupported by evidence and ruled that the claim at issue was not obvious. Again, ELCO appealed.

ELCO raised two main arguments. First, it argued that the Board erred in not determining that the claim at issue was anticipated by a prior reference, as the Board had previously found another claim to be anticipated by the same reference. The Federal Circuit rejected this argument because ELCO had only challenged the claim at issue on the basis of obviousness in its original petition, not anticipation. Since the issue of anticipation was not raised in the petition, the Court determined that ELCO could not introduce this new ground of unpatentability on appeal.

Second, ELCO argued that its petition had sufficiently demonstrated the obviousness of Limitation M based on the prior references. The Federal Circuit disagreed, finding that ELCO’s petition did not adequately address the specific requirement for coupling the system to a building’s electrical infrastructure. The petition failed to discuss how the recessed lighting system would be installed in a building, and the references cited did not provide adequate support for the argument of obviousness for this particular limitation.

The Federal Circuit emphasized that it was not the Board’s responsibility to supplement the petitioner’s arguments or search for evidence to support an inadequately supported claim challenge. The Court reiterated that an obviousness analysis does not require the Board to fill gaps in the petitioner’s original [...]

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Even Jepson Preambles Require Written Description Support

by Tessa Kroll | Mar 27, 2025 | Patents

The US Court of Appeals for the Federal Circuit found a Jepson claim unpatentable where the specification did not provide adequate written description for the portion of the claim purporting to recite what was already well known in the prior art. In re Xencor, Inc., Case No. 24-1870 (Fed. Cir. Mar. 13, 2025) (Hughes, Stark, Schroeder, JJ.)

Xencor filed a patent application claiming a modified anti-C5 antibody treatment with certain amino acid substitutions that provide for longer serum half-lives and reduce the need for more frequent treatment. The application included:

A Jepson claim reciting, “[i]n a method of treating a patient by administering an anti-C5 antibody with an Fc domain, the improvement comprising” certain amino acid substitutions, wherein the modified antibody has “increased in vivo half-life.”
A non-Jepson claim directed to “a method of treating a patient by administering an anti-C5 antibody comprising” certain amino acid substitutions, wherein the modified antibody “has increased in vivo half-life.”

The specification provided one example of an anti-C5 antibody, 5G1.1, and three high-level examples of potential uses for anti-C5 antibodies. The examiner rejected the claims for lack of written description. Xencor unsuccessfully appealed the rejection to the Patent Trial & Appeal Board. Xencor then unsuccessfully petitioned the Board for reconsideration. Xencor appealed to the Federal Circuit, which resulted in a remand to the Board’s Appeals Review Panel (ARP).

The ARP concluded that Jepson claim preambles require written description support and that the preamble language of “treating a patient” was limiting – even without the Jepson claim format – because it gave life and meaning to the claim recitations “increased in vivo half-life” and “administering.” Because the specification did not provide a representative number of species to support the broad genus of anti-C5 antibodies, a description of conditions that can successfully be treated with an anti-C5 antibody, or even a single working example describing treatment with an anti-C5 antibody with the claimed modifications, the ARP found that the claims lacked written description and that Xencor had not shown that anti-C5 antibodies were well known. Xencor again appealed, arguing that “treating a patient” was not limiting and that Jepson preambles do not require written description support.

With respect to the preamble of the method claim, the Federal Circuit noted that Xencor agreed that the “administering” portion was limiting but nonetheless argued that “treating a patient” was not. Although a preamble can be split into limiting and non-limiting parts, the Court reasoned that the preamble here could not be neatly packaged into separate portions because the phrase “treating a patient” was directly connected through the word “by” to the phrase “administering an anti-C5 antibody,” and each phrase gave meaning to the other. The Court further explained that the entire preamble provided the raison d’être of the claimed method: When a patient is treated with the modified anti-C5 antibody, the treatment lasts longer, reducing the frequency of treatments. Accordingly, the Court agreed with the ARP that the recitation “treating a patient” was limiting.

The Federal Circuit [...]

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No APA Review of Commission Refusal to Issue Sua Sponte Show Cause Order

by Cecilia Choy, Ph.D. | Mar 27, 2025 | Patents

The US Court of Appeals for the Federal Circuit dismissed an appeal challenging a US International Trade Commission decision that upheld an administrative law judge’s (ALJ) order, ruling that such an order was within the Commission’s discretion and unreviewable. Realtek Semiconductor Corp. v. International Trade Commission, Case No. 23-1095 (Fed. Cir. Mar. 18, 2025) (Moore, C.J.; Reyna, Taranto, JJ.)

DivX filed a complaint at the Commission against Realtek alleging a violation of § 1337 of the Tarriff Act. DivX later withdrew the complaint. Realtek subsequently filed a motion for sanctions against DivX, alleging certain misconduct. The ALJ denied the motion on procedural grounds. Realtek subsequently petitioned for Commission review, asking the Commission to exercise its authority to issue a sua sponte order requiring DivX to show cause explaining why it had not engaged in sanctionable conduct. The Commission decided not to review and adopted the ALJ’s order without comment.

Realtek appealed, contending that the Commission violated the Administrative Procedure Act (APA) by not issuing a sua sponte show cause order. The Commission argued that Realtek’s appeal should be dismissed, contending that the issue raised was unreviewable.

The Federal Circuit agreed with the Commission, stating that under § 701(a)(2) of the APA, decisions made by an agency are unreviewable by the Court when they are entrusted to the agency’s discretion by law. The Court explained that the sua sponte issuance of a show cause order is a decision that “may be, not must be,” entered by the ALJ or on the Commission’s initiative. Therefore, the decision not to act sua sponte is a decision that remains wholly within the agency’s discretion.

The Federal Circuit rejected Realtek’s argument that the Commission’s refusal to act was reviewable because the Commission failed to provide reasoning, and that Commission review would have allowed the Court to determine if there were “illegal shenanigans” in exercising discretion. However, the case cited by Realtek involved the review of “shenanigans” that fell within the Court’s reviewable categories, not one related to the Commission’s refusal to issue a show cause order sua sponte. The Court found no support for Realtek’s claim that discretionary agency actions under § 701(a)(2) become reviewable under the APA simply because the agency fails to provide its reasoning.

No Bull: Historically Generic Term Can Become Non-Generic

by Amit Kumar Saha, PhD | Mar 20, 2025 | Trademarks

The US Court of Appeals for the Federal Circuit affirmed Trademark Trial & Appeal Board rulings, finding that a previously generic term was not generic at the time registration was sought because at that time the mark, as used in connection with the goods for which registration was sought, had achieved secondary meaning. Bullshine Distillery LLC v. Sazerac Brands, LLC, Case Nos. 23-1682; -1900 (Fed. Cir. Mar. 12, 2025) (Moore, C.J.; Reyna, Taranto, JJ.)

In 2015 Bullshine sought to register the trademark BULLSHINE FIREBULL for its line of “[a]lcoholic beverages except beers.” Sazerac, the owner of the FIREBALL marks used for liqueurs and whiskey, opposed registration. Sazerac argued that the registration of BULLSHINE FIREBULL would likely cause consumer confusion due to its similarity to Sazerac’s FIREBALL marks. Bullshine counterclaimed, asserting that the term “fireball” had become generic and was commonly used to describe a type of alcoholic drink, thus invalidating Sazerac’s claim to exclusivity.

The Board found that the FIREBALL mark was not generic either at the time of registration nor at the time of trial, and that BULLSHINE FIREBULL was not likely to cause confusion with Sazerac’s marks. The Board determined that the FIREBALL mark was “commercially strong but conceptually weak,” that the respective marks of Sazerac and Bullshine were dissimilar when considered in their entireties, and that Bullshine did not act in bad faith in choosing its marks. The Board denied Sazerac’s opposition to the BULLSHINE FIREBULL mark as well as Bullshine’s counterclaim that the FIREBALL mark was generic. Both parties appealed.

Bullshine argued that the Board applied the incorrect legal standard in finding FIREBALL not generic and that consequently, the finding of non-genericness (upon consideration of secondary meaning) was erroneous. Bullshine argued that since “fireball” was a generic term prior to Sazerac’s registration (as both parties agreed), that fact should have precluded Sazerac’s registration, and the Board erred in considering evidence of secondary meaning. Bullshine argued that if a term was generic at any time prior to registration, it remains generic, regardless of how it might be understood at the time of registration (i.e., once generic, always generic). Sazerac argued that the time to assess genericness is at the time of registration. The Federal Circuit agreed with Sazerac.

The Federal Circuit explained that the genericness inquiry is ultimately guided by “what consumers would think at the time of registration,” and that this ruling is supported by the statutory scheme of the Lanham Act. The Court explained that the Lanham Act, in addition to preventing registration of generic terms, also provides for cancellations of marks “[a]t any time,” and even marks with incontestable statuses can be challenged based on genericness. Therefore, Congress intended that the analysis of whether a term is generic can change over time, and Bullshine’s argument was inconsistent with the statute. This conclusion follows from the legal premise that impression of consumers is “necessarily contemporaneous with the time of registration.”

Bullshine cited the 1961 CCPA decision in Weiss Noodle in support of its argument that [...]

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Get a Grip: Not All Cords Have Handles

by Dexter Hamilton | Mar 20, 2025 | Patents

The US Court of Appeals for the Federal Circuit vacated a district court’s grant of summary judgment of noninfringement because the district court improperly narrowed a claim term during its construction. IQRIS Technologies LLC v. Point Blank Enterprises, Inc. et al., Case No. 2023-2062 (Fed. Cir. Mar. 7, 2025) (Lourie, Linn, Stoll, JJ.)

IQRIS sued Point Black and National Molding for infringing its patents related to “quick release systems on tactical vests.” The patent claim vests include a “pull cord.” When pulled, the pull cord causes releasable hooks to disengage, detaching the front and rear portions of the vest. The defendants moved for summary judgment of noninfringement, arguing that the claimed “pull cord” is “a cord on the exterior of the ballistic garment grasped by a user that is capable of disengaging the releasable fastener or releasable hook when a user pulls on the pull cord.” IQRIS argued that the term should be construed as “a component which, when put into tension, can result in activating the releasable fastener.”

The district court construed “pull cord” as a “cord that can be directly pulled by a user to disengage a releasable fastener or releasable hook,” a construction that excluded cords with a handle. The district court found that one of the accused products featured a “trigger manifold” that enabled the user to apply “indirect force to [an] internal wire by applying a direct force to the trigger.” As a result, the district court determined that no reasonable jury could find infringement for that product. For another product, the district court found summary judgment to be appropriate because to rule otherwise, the accused vest would improperly encompass prior art criticized in the “background of the invention” portion of the patent specification. The specification criticized prior art having “cutaway vests with ‘handle’ release systems.”

IQRIS appealed. The Federal Circuit considered whether the district court correctly restricted “pull cord” to cords that are “directly pulled by a user.” The Court found that the claim language, which made no reference to “who or what pulls,” did not distinguish between direct and indirect pulling. Citing the patent specification, the Federal Circuit disagreed with the lower court’s interpretation, noting that the specification referred to a directly pulled element as a “pull cord” but an indirectly pulled element as just a “cord.” The Court noted that even though all disclosed embodiments depicted a directly pulled pull cord, “our precedent counsels against reading this requirement into the claims when the claims do not expressly require as much.”

The Federal Circuit next considered whether the proper construction of the term “pull cord” excluded cords with handles. The Court found that “nothing in the claim language, specification, or prosecution history supports this construction.” The claim language was “silent about the structure of the pull cord,” and the specification “suggest[ed] otherwise because each of the figures depicts a circular ball at the end of the pull cord[], suggesting that the inventors contemplated pull cords with handles.” While the specification criticized the cutaway [...]

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