noninfringement Archives

noninfringement

Lost in the constellation: Result-oriented claims miss the mark under § 101

by Keval Amin | May 7, 2026 | Patents

Addressing issues related to patent eligibility, infringement, and damages, the US Court of Appeals for the Federal Circuit vacated in part, affirmed in part, and remanded, finding that certain result-oriented claims were directed to an abstract idea, lacked an inventive concept, and were therefore not patent eligible. Constellation Designs, LLC v. LG Electronics Inc., et al., Case No. 24-1822 (Fed. Cir. Apr. 28, 2026) (Lourie, Stoll, Oetken, JJ.)

Constellation sued LG for infringing its patents directed to communication systems employing non-uniform constellations, which are signal configurations designed to improve data transmission capacity compared to conventional uniform constellations. The accused products were LG televisions compliant with the ATSC 3.0 broadcast standard.

Constellation successfully moved for summary judgment in its favor on patent eligibility under 35 U.S.C. § 101. At trial, Constellation asserted nine claims across four patents, which the parties grouped into two categories: “optimization claims,” which recited constellations optimized for capacity, and “constellation claims,” which recited specific non-uniform constellation configurations. A jury found willful infringement and awarded damages. The district court denied LG’s motions for judgment as a matter of law (JMOL) of noninfringement and no damages. LG appealed.

On the patent eligibility issue, the Federal Circuit applied the two-step Alice framework and vacated the district court’s ruling as to the optimization claims. At step one, the Court found those claims directed to the abstract idea of optimizing a constellation for parallel decoding capacity. The Court emphasized that the claims were written in a result-oriented manner, reciting a constellation “optimized” for capacity without specifying how that optimization was achieved. Although the claims did not cover every possible optimization technique, they were broad enough to encompass all ways of optimizing a constellation for parallel decoding capacity. The Court rejected Constellation’s reliance on technical details in the specification and reiterated that the § 101 inquiry focuses on the claim language, not unclaimed implementation details. At step two, the Court found no inventive concept, explaining that Constellation’s alleged innovation was the abstract idea itself and that arguments based on novelty or nonobviousness do not satisfy § 101.

In contrast, the Federal Circuit affirmed the district court’s eligibility determination for the constellation claims. The Court explained that representative claims recited specific, concrete configurations (such as unequally spaced constellation points, distinct labeling, and overlapping point locations) amounting to a particular technological solution to a defined problem. Because those claims were not directed to an abstract idea, the Court did not proceed to step two.

On infringement, the Federal Circuit affirmed the denial of JMOL. The Court clarified that a patentee may rely on industry standard compliance to prove some claim limitations while using product-specific evidence for others, as long as the standard is sufficiently specific and either mandatory or shown to be implemented in the accused products. Applying that framework, the Court found that substantial evidence supported the jury’s verdict.

As for damages, the Federal Circuit affirmed the denial of LG’s JMOL motion and its challenge to the admissibility of Constellation’s damages expert. The Court [...]

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Pay up, per party litigation stipulation

by Lauren Hong | Apr 23, 2026 | Patents

The US Court of Appeals for the Federal Circuit revived key portions of a long-running patent dispute, rejecting the district court’s extraterritoriality ruling and narrowing its prosecution disclaimer analysis while leaving intact the exclusion of certain damages theories for inadequate disclosure. VLSI Technology LLC v. Intel Corporation, Case No. 24-1772 (Fed. Cir. Apr. 15, 2026) (Moore, Chen, Kleeh, JJ.)

VLSI filed suit in 2017 accusing Intel of infringing several patents related to selecting an appropriate core in a multicore processor to execute a task based on measured performance characteristics. Following claim construction and discovery, the district court struck portions of VLSI’s damages case, concluding that certain theories advanced by VLSI’s damages expert had not been adequately disclosed. The court then granted summary judgment of noninfringement on two independent grounds: extraterritoriality on the theory that the claimed “measuring” activity occurred outside the United States, and failure of VLSI’s doctrine of equivalents arguments. VLSI appealed.

The Federal Circuit reversed in substantial part. As to the asserted method claims, the Federal Circuit concluded that the district court’s extraterritoriality analysis could not be reconciled with the parties’ stipulation. That stipulation provided that, for accused Intel products and activities meeting the technical requirements of the asserted claims, 70% would be deemed to satisfy the requisite US nexus for infringement purposes. The district court had reasoned that the stipulation could not establish domestic infringement unless the underlying claim limitations themselves were practiced in the United States. The Federal Circuit disagreed, emphasizing the stipulation’s plain language that the technical requirement inquiry was to be conducted “without regard to geographic considerations.”

The Federal Circuit rejected Intel’s contention that the stipulation merely served as a damages accounting shortcut rather than as an agreement bearing on infringement. However, in the Court’s view, stipulating a fact relevant to infringement, such as US nexus, is different from conceding infringement itself. The Court therefore found that Intel was bound by the agreement it struck, even if it later came to view the agreement as “imprudently made.”

On that basis, the Federal Circuit reversed the grant of summary judgment of noninfringement on extraterritoriality grounds for the asserted method claims.

The Federal Circuit also reversed summary judgment as to the asserted apparatus claims. It concluded that the district court had focused too narrowly on where the claimed measuring functionality was practiced, rather than on whether the accused products were reasonably capable of performing the claimed functions without significant alteration. The Court concluded that the record contained sufficient evidence to create a genuine dispute of material fact as to whether the accused products were reasonably capable of performing the claimed measuring limitations. Summary judgment was therefore inappropriate, and the Court reversed the extraterritoriality ruling as to the apparatus claims.

The Federal Circuit also reinstated VLSI’s doctrine of equivalents theory for some of the apparatus claims that the district court had barred based on a prosecution disclaimer finding. Referencing the prosecution of the asserted patent, the district court imported an “upon identifying” limitation into the claims, notwithstanding [...]

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No Standing to Invalidate Trademark without Threat of Infringement Suit

by Cecilia Choy, PhD | Feb 23, 2023 | Trademarks

The US Court of Appeals for the Ninth Circuit concluded that when a party obtains a declaratory relief finding that it does not infringe a trademark, it no longer has Article III standing to pursue invalidation of the mark. San Diego County Credit Union v. Citizens Equity First Credit Union, Case Nos. 21-55642; -55662; -56095; -56389 (9th Cir. Feb. 10, 2023) (Bea, Ikuta, Christen, JJ.)

Citizens Equity First Credit Union (CEFCU) registered a trademark for the term “CEFCU. NOT A BANK. BETTER,” and further claimed to own a nearly identical common-law trademark for “NOT A BANK. BETTER.” In 2014, San Diego County Credit Union (SDCCU) obtained a registration for “IT’S NOT BIG BANK BANKING. IT’S BETTER.” CEFCU petitioned the Trademark Trial & Appeal Board to cancel SDCCU’s registration, claiming that it covered a mark that was confusingly similar to CEFCU’s registered and alleged common-law marks.

SDCCU sought declaratory relief in the district court seeking a noninfringement finding of CEFCU’s registered and common-law marks, an invalidity finding of CEFCU’s registered and common-law marks, and a finding that CEFCU falsely or fraudulently registered its mark. CEFCU unsuccessfully filed motions to dismiss for lack of personal and subject matter jurisdiction. SDCCU persuaded the district court that during the course of the cancellation proceedings, it became apprehensive that CEFCU would sue SDCCU for trademark infringement. The district court granted SDCCU’s motion for summary judgment on noninfringement and CEFCU’s motion for summary judgment on SDCCU’s fraudulent registration claim. The parties agreed to dismiss the claim that CEFCU’s registered mark was invalid. The only issue remaining was SDCCU’s count seeking declaratory relief to invalidate CEFCU’s common-law mark. After a bench trial, the district court determined that CEFCU’s common-law mark was invalid, entered final judgment and awarded SDCCU attorneys’ fees. CEFCU appealed.

In an appeal that raised a “bevy of issues,” the Ninth Circuit concluded that the district court lacked Article III jurisdiction to invalidate CEFCU’s common-law mark following the grant of summary judgment in favor of SDCCU on its noninfringement claims. Citing the Supreme Court’s 2007 decision in MedImmune v. Genentech and Ninth Circuit precedent, the Ninth Circuit applied the “reasonable apprehension” test to determine whether a controversy exists in a declaratory judgment action regarding trademark infringement. Under this test, a party has standing to seek declaratory relief of noninfringement if the party demonstrates “a real and reasonable apprehension that [the party] will be subject to liability” if the party’s course of conduct continues. Concrete threats of a trademark infringement suit are not required to create live controversy to provide standing to seek declaratory relief action.

The Ninth Circuit concluded that justiciable controversy existed at the pleading stage, pointing to CEFCU’s cancellation petition, CEFCU’s testimony that it was just a “matter of time” before actual confusion occurred in California, and CEFCU’s affirmative refusal to stipulate that SDCCU was not infringing CEFCU’s marks. However, once the district court rendered its declaratory judgment of noninfringement, the record lacked any evidence that an ongoing threat of liability was causing [...]

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No Splitting the Die – Federal Circuit Affirms Summary Judgment of Noninfringement

by Rebecca Harker Duttry | Jan 8, 2020 | Patents

A divided panel decision of the US Court of Appeals for the Federal Circuit affirmed a summary judgment of noninfringement, finding no disputed issues of material fact to preclude summary judgement. Plastic Omnium Advanced v. Donghee America, Inc., Case No. 2018-2087 (Fed. Cir., Nov. 21, 2019) (Reyna, J) (Clevenger, J, dissenting).

Plastic Omnium filed suit against Donghee for patent infringement of patents generally relating to manufacturing plastic fuel tanks formed by blow molding. A portion of this process, as claimed, requires “cutting and opening an extruded parison of closed cross section.” The primary dispute on appeal is the meaning of the claim term “parison.” In its claim construction order, the district court found the patentee had acted as its own lexicographer, defining the key disputed term “parison” as “referring to a plastic tube with a closed cross section that is shaped by—and has reached the end of—a die and is split either immediately upon exiting the die or at some point thereafter.” Following claim construction, the district court granted Donghee’s motion for summary judgment of noninfringement as to the asserted claims. Plastic Omnium appeals the grant of summary judgment under both literally infringement and infringement under the doctrine of equivalents.

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