News & Analysis as of

CAFC Intellectual Property Litigation Appellate Courts

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

WilmerHale

Federal Circuit Patent Watch: District Court Errs by Turning a Matter of Claim Construction over to the Jury to Decide and by...

WilmerHale on

Precedential and Key Federal Circuit Opinions - LABORATORY CORPORATION OF AMERICA HOLDINGS v. QIAGEN SCIENCES, LLC [OPINION] (2023-2350, 08/13/2025) (Lourie, Dyk, Cunningham) - Lourie, J. The Court reversed the...more

Proskauer - The Patent Playbook

Federal Circuit Lifts § 101 Barrier on Smart Dumbbells

On August 11, 2025, the Federal Circuit reversed the District of Utah’s ruling that all but one of the claims in PowerBlock Holdings, Inc.’s U.S. Patent No. 7,578,771 were invalid under 35 U.S.C. § 101. PowerBlock Holdings,...more

Proskauer - The Patent Playbook

Federal Circuit Reverses $4.7M Verdict in Labcorp v. QIAGEN: Claim Scope and Doctrine of Equivalents in the Crosshairs

The Federal Circuit recently reversed a $4.7M verdict in a patent lawsuit involving two patents concerning next-generation sequencing methods—U.S. Patent Nos. 10,017,810 and 10,450,597. Both patents concern DNA preparation...more

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