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Patent Invalidity Expert Testimony On-Sale Bar

A&O Shearman

Federal Circuit Affirms Patent Invalidity, Emphasizes Need For Substantive Expert Testimony

A&O Shearman on

On August 19, 2025, the U.S. Court of Appeals for the Federal Circuit issued an opinion affirming the U.S. District Court for the Eastern District of Louisiana’s grant of summary judgment that claims of Wilco Marsh Buggies &...more

Knobbe Martens

Federal Circuit Holds District Court Abused Its Discretion by Excluding an Authenticating Witness

Knobbe Martens on

JIAXING SUPER LIGHTING ELECTRIC APPLIANCE, CO. v. CH LIGHTING TECHNOLOGY CO., LTD. - Before Dyk, Chen, and Hughes. Appeal from the United States District Court for the Western District of Texas. The Federal Circuit reversed...more

McDermott Will & Schulte

Dim damages methods can doom bright ideas

In a mixed ruling on evidentiary exclusions and damages methodology, the US Court of Appeals for the Federal Circuit affirmed in part, reversed in part, vacated in part, and remanded a district court’s decision that excluded...more

A&O Shearman

Evidence Exclusion And Daubert Motion Denials Must Be Supported By Valid Legal Rule And Reasoning; Damage Calculation Must Account...

A&O Shearman on

In Jiaxing Super Lighting Elec. Appliance, Co. v. CH Lighting Tech. Co., Ltd, the Court of Appeals for the Federal Circuit reviewed the judgment in a patent infringement case involving three patents owned by Jiaxing Super...more

McDermott Will & Emery

Accused Infringer Rides Antitrust Roller Coaster - Magnetar Technologies Corp. v. Intamin Ltd.

McDermott Will & Emery on

Addressing antitrust issues in connection with a dismissed patent infringement lawsuit, the U. S. Court of Appeals for the Ninth Circuit affirmed a grant of summary judgment dismissing antitrust and malicious prosecution...more

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