News & Analysis as of

Disclaimers Appeals Patent Litigation

BCLP

Federal Circuit Clarifies Limits of Prosecution Disclaimer in Patent Families

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In Maquet Cardiovascular LLC v. Abiomed Inc., 131 F.4th 1330 (Fed. Cir. 2025), the Federal Circuit addressed whether the prosecution history of one patent in a patent family can limit the scope of claims in a different patent...more

McDermott Will & Emery

Prosecution Disclaimer Alive and Well, Especially in Closed Claim

McDermott Will & Emery on

The US Court of Appeals for the Federal Circuit affirmed a district court’s noninfringement determination, finding that the presence of a disclaimed compound in the accused product precluded infringement. Azurity Pharm., Inc....more

McDermott Will & Emery

Espresso Yourself: When Prosecution History as a Whole Doesn’t Demonstrate Clear, Unmistakable Disclaimer

The US Court of Appeals for the Federal Circuit reversed and remanded a district court’s claim construction and related summary judgment rulings after determining that the district court erred in construing a claim term by...more

Schwabe, Williamson & Wyatt PC

Latest Federal Court Cases - September 2022

INVT SPE LLC v. Int’l Trade Comm’n, Appeal No. 2020-1903 (Fed. Cir. Aug. 31, 2022) - In its only precedential patent case last week, the Federal Circuit issued a lengthy opinion that revolved around claims that are drawn...more

Knobbe Martens

Sounding Off: Prosecution Disclaimer Requires Unambiguous Intrinsic Evidence

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GENUINE ENABLING TECHNOLOGY LLC V. NINTENDO CO., LTD - Before Newman, Reyna, and Stoll. Appeal from the Western District of Washington. Summary: A finding of prosecution disclaimer must be supported by an unambiguous...more

Akin Gump Strauss Hauer & Feld LLP

Federal Circuit: Statutory Disclaimer Results in No Case or Controversy

The Federal Circuit ruled that statutory disclaimer terminates the case or controversy between the parties in an infringement suit as to those claims, and immediately deprives the district court of the authority to take...more

Schwabe, Williamson & Wyatt PC

Fresh From the Bench: Precedential Patent Cases From the Federal Circuit

Core Wireless v. LG affirms the denial of summary judgment as to unpatentable subject matter, ruling that the asserted claims are directed to an improved user interface for computing devices, not to the abstract idea of an...more

Knobbe Martens

Federal Circuit Review | April 2017

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Patentee’s Unnecessarily Broad Prosecution Disclaimer Affirmed by Federal Circuit - In Technology Properties Limited LLC v. Huawei Technologies Co., Ltd., Appeal Nos. 2016-1306, -1307, -1309, -1310, -1311, the Federal...more

McDonnell Boehnen Hulbert & Berghoff LLP

Avid Technology, Inc. v. Harmonic, Inc. (Fed. Cir. 2016) - Lesson for Defendant-Appellee's: Provide Responsive Arguments on Appeal

On January 29, 2016, the Federal Circuit issued an Opinion in Avid Technology, Inc. v. Harmonic, Inc. in which the judgment of the District Court was vacated, and the case was remanded for a new trial on infringement. Avid...more

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