News & Analysis as of

Patent Infringement Patent Applications

Morrison & Foerster LLP

Federal Circuit Pushes Back on Prosecution Laches

In October 2023, we reported on the district court decision in Sonos, Inc. v. Google LLC. The decision was notable for reviving the prosecution laches doctrine to render unenforceable a continuation patent filed 13 years...more

Bradley Arant Boult Cummings LLP

The Federal Circuit Calls for a Replay Allowing Sonos Another Opportunity at Google

The Federal Circuit’s recent decision in Google LLC v. Sonos, Inc. (24-1097) offers a compelling look at the evolving doctrine of prosecution laches, the written description requirement, and the practical realities of patent...more

White & Case LLP

The Federal Circuit clarifies AIA derivation standards: Independent conception is key

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In its first precedential review of an AIA derivation proceeding, the Federal Circuit held that to prove derivation, a petitioner has the burden of showing that the petitioner conceived the claimed subject matter and...more

Wolf, Greenfield & Sacks, P.C.

Is Your IP Pacing Your Innovation?

As your company grows, expands, and develops new technology, it is critical to evaluate your intellectual property strategy. What may have worked during the early stages or for your initial technology may need to change. For...more

K&L Gates LLP

Let’s Make it a Date–Best Method and the Filing Date of the Earliest Complete Application

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In the recent decision of NOCO Company v. Brown and Watson International Pty Ltd [2025] FCA 887, Moshinsky J has provided welcomed clarity around the relevant date by which the best method known to the applicant is to be...more

Irwin IP LLP

Arguments in Prosecution History Limit Design Patents Too 

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The USPTO must reject a patent application if the applicant’s claim covers what the prior art already disclosed, and patent applicants may respond to such rejections with arguments that what they claimed was different. ...more

Patterson Belknap Webb & Tyler LLP

Out With the Old, in With the New: Judge Ramos Grants Leave to Assert New Patents After the Original Patents-in-Suit Were Found...

On July 29, 2025, Judge Edgardo Ramos (S.D.N.Y.) granted plaintiff Kannuu Pty, Ltd. (“Kannuu”) leave to amend its complaint to allege infringement of two newly-issued patents, after the U.S. Patent and Trademark Office...more

Robins Kaplan LLP

Azurity Pharms., Inc. v. Alkem Labs. Ltd.

Robins Kaplan LLP on

Nature of the Case and Issue(s) Presented: The ’948 patent claims non-sterile drinkable liquid formulations of vancomycin, an antibiotic used to treat Clostridium difficile infection. These formulations are particularly...more

Knobbe Martens

Cancellation of a Closely Related Claim During Prosecution Can Trigger Prosecution History Estoppel

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COLIBRI HEART VALVE LLC v. MEDTRONIC COREVALVE, LLC - Before Taranto, Hughes, and Stoll. Appeal from the United States District Court for the Central District of California. The Federal Circuit reversed a $106 million...more

Knobbe Martens

Not So Cozy: Prosecution History Disclaimer for Design Patents

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TOP BRAND LLC v. COZY COMFORT CO. LLC - Before Dyk, Reyna, and Stark. Appeal from the United States District Court for the District of Arizona. Summary: Arguments presented during prosecution of a design-patent application...more

Cooley LLP

Federal Circuit Strengthens Prosecution History Estoppel Principles in Colibri Heart Valve LLC v. Medtronic CoreValve, LLC

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On July 18, 2025, the US Court of Appeals for the Federal Circuit reversed a lower court ruling in Colibri Heart Valve LLC v. Medtronic CoreValve, LLC, holding that prosecution history estoppel barred the patentees’ doctrine...more

Sterne, Kessler, Goldstein & Fox P.L.L.C.

Rise of Obviousness Double Patenting SNQs and Rejections in Reexaminations Challenging Expired Patents

Obvious-type double patenting (ODP) has historically served as a tool to prevent patent owners from extending exclusivity beyond the statutory allowed patent term and to tie patent families together during sale. Historically,...more

McDermott Will & Schulte

Don’t get too comfy: Prosecution disclaimer also applies to design patents

Concluding that the principles of prosecution history disclaimer apply to design patents, the US Court of Appeals for the Federal Circuit reversed a district court’s denial of judgment as a matter of law and entry of a jury...more

Goodwin

Amgen and Accord BioPharma Settle Denosumab BPCIA Case

Goodwin on

​​​​​​​On July 16, 2025, the District Court for the District of New Jersey entered a Consent Judgment and Injunction in view of a settlement agreement between Amgen, Inc. (“Amgen”) and Accord BioPharma, Inc. (“Accord”)...more

McDonnell Boehnen Hulbert & Berghoff LLP

Colibri Heart Valve LLC v. Medtronic Corevalve, LLC (Fed. Cir. 2025)

The doctrine of equivalents (DOE), a creation of the Supreme Court in Graver Tank & Mfg. v. Linde Air Products (1950), is balanced by the concept of prosecution history estoppel (PHE), the contours of which were delineated...more

Sheppard Mullin Richter & Hampton LLP

Lexicography: Clear And Unequivocal

This Federal Circuit opinion analyzes lexicography in the context of claim construction. Alnylam Pharmaceuticals owns U.S. Patent Nos. 11,246,933 (parent) and 11,382,979 (child). These patents relate to biodegradable...more

Morgan Lewis

A New Line Drawn: Federal Circuit Applies Prosecution History Disclaimer to Design Patents

Morgan Lewis on

The US Court of Appeals for the Federal Circuit recently issued a decision that held for the first time that principles of prosecution history disclaimer apply to design patents, aligning design patent law more closely with...more

Proskauer - The Patent Playbook

PTO Creates New Expectations Regarding Discretionary Denials

On the heels of the U.S. Patent and Trademark Office Acting Director’s recent decision to deny institution of iRhythm Technologies’ inter partes review petition, the PTO has now issued additional decisions clarifying the role...more

Jackson Walker

Perceptix v. Meta Platforms – A Headphone Patent Lawsuit Without a Sound Basis

Jackson Walker on

On June 30, 2025, Perceptix filed suit against Meta Platforms for infringement of U.S. Patent 8,498,439, which describes a headphone that turns on when it is worn. The ‘439 Patent is assigned to the Electronics and...more

Venable LLP

Spotlight On: Biosimilar Litigations - July 2025

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Biosimilar Litigations include litigations relating to biosimilar/follow-on products of CDER-listed reference products. Litigations between biosimilar applicants/manufacturers and reference product sponsors as well as...more

Venable LLP

Spotlight On: Lantus® / Lantus® SoloSTAR® (insulin glargine recombinant) / Basaglar® (insulin glargine) / Semglee® (insulin...

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Insulin Glargine Challenged Claim Types in IPR and Litigation: Claims include those challenged in litigations and IPRs. Claims are counted in each litigation and IPR, so claims from the same patent challenged in multiple...more

Troutman Pepper Locke

Patent Litigation Filings May Rise as GDP Falls for First Time in Three Years: Key Insights for Plaintiffs and Defendants

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While there’s no definitive consensus, economists are closely monitoring the possibility of entering a recession this year. Economists agree a recession is not imminent, but caution the odds of facing a recession are higher...more

Volpe Koenig

When an IDS Comes Back to Haunt You: Lessons from iRhythm v. Welch Allyn

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Patent attorneys are well-versed in the function of the Information Disclosure Statement (IDS) during prosecution. We understand that listing prior art in an IDS satisfies the duty of candor, helps insulate patents from...more

Lathrop GPM

Claim Construction Matters: Federal Circuit Decision Highlights the Significance of Lexicography in Patent Drafting

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A precedential ruling by the U.S. Court of Appeals for the Federal Circuit on June 4 affirmed that Moderna’s mRNA-based COVID-19 vaccine SPIKEVAX® does not infringe two patents owned by Alnylam Pharmaceuticals, upholding a...more

Sterne, Kessler, Goldstein & Fox P.L.L.C.

The Space Industry’s Legal Landscape: Developing Robust Intellectual Property Portfolios

As private industry and government entities increasingly venture into space, securing IP rights for space-related innovations has become a critical consideration. The global space industry is projected to generate more than...more

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