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Foley & Lardner LLP

Federal Circuit Skeptical of Prosecution Laches

Foley & Lardner LLP on

In Google v. Sonos, the Federal Circuit soundly disposed of arguments that the patent-in-suit was unenforceable due to laches based on an “unreasonable delay” in patent prosecution. Does the court’s reasoning foreclose the...more

Morrison & Foerster LLP

Federal Circuit Pushes Back on Prosecution Laches

Morrison & Foerster LLP on

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

Bradley Arant Boult Cummings LLP on

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

McDonnell Boehnen Hulbert & Berghoff LLP

In re BAC IP B.V. (Fed. Cir. 2025)

McDonnell Boehnen Hulbert & Berghoff LLP on

A patent applicant dissatisfied by an patent examiner's rejection of that applicant's claims in ex parte prosecution has recourse by appeal to the Patent Trial and Appeal Board (PTAB) under 35 U.S.C. § 134, and to the Federal...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

Morgan Lewis

Priority Catch-22: Federal Circuit Chills Design Patent with Rejection of Priority Claim

Morgan Lewis on

The US Court of Appeals for the Federal Circuit recently issued a decision that highlights a risk in design patent prosecution—specifically, attempting to claim priority to a utility application. In re Floyd, the Federal...more

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