News & Analysis as of

Patent Invalidity CAFC Written Descriptions

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

McDermott Will & Schulte

Specification controls: Written description must be clear

The US Court of Appeals for the Federal Circuit reversed a district court’s decision upholding patent validity, finding that the subject patent’s specification clearly established that the written description failed to...more

Alston & Bird

Patent Case Summaries | Week Ending August 8, 2025

Alston & Bird on

Mondis Technology Ltd., et al. v. LG Electronics Inc., et al., Nos. 2023-2117, -2116 (Fed. Cir. (D.N.J.) Aug. 8, 2025). Opinion by Hughes, joined by Taranto and Clevenger....more

Knobbe Martens

An Examiner’s Allowance Does Not Create an “Especially Weighty” Presumption of Written-Description Support

Knobbe Martens on

MONDIS TECHNOLOGY LTD., HITACHI MAXELL, LTD., NKA MAXELL HOLDINGS, LTD., MAXELL, LTD.  v.  LG ELECTRONICS INC., LG ELECTRONICS USA, INC. - Before Taranto, Clevenger, and Hughes.  Appeal from the United States District Court...more

McDonnell Boehnen Hulbert & Berghoff LLP

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

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

Schwabe, Williamson & Wyatt PC

Latest Federal Court Cases: Mondis Tech. Ltd. v. LG Electronics Inc.

Mondis Tech. Ltd. v. LG Electronics Inc., Appeal Nos. 2023-2117, -2116 (Fed. Cir. Aug. 8, 2025) Our Case of the Week focuses on the written description requirement, and, in particular, how that requirement is considered...more

A&O Shearman

Federal Circuit Clarifies Requirements For A Prior Art Reference’s Entitlement To The Filing Date Of A Provisional Application To...

A&O Shearman on

On March 24, 2025, the U.S. Court of Appeals for the Federal Circuit (“CAFC”) issued an opinion vacating and remanding a decision of the U.S. Patent Trial and Appeal Board (the “Board”) that a published patent application...more

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