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Patent Invalidity Summary Judgment Expert Testimony

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

Akin Gump Strauss Hauer & Feld LLP

N.D. Cal. Judge Reverses Prior Order Barring Device Art “Materially Identical” to Printed Publications After Federal Circuit...

A Northern District of California judge recently granted a motion to reconsider his summary judgment ruling that defendant was barred from raising certain “device art” due to IPR estoppel under 35 U.S.C. § 315(e)(2). In the...more

McDermott Will & Schulte

Cold Pattern Forecast: Piecemeal Design Evaluation Yields Improper Infringement Analysis

McDermott Will & Schulte on

In a procedurally complicated case involving allegations of both utility and design patent infringement, the US Court of Appeals for the Federal Circuit found that a district court’s piecemeal approach to a design patent...more

Knobbe Martens

Inherent Anticipation for Biotechnology Inventions

Knobbe Martens on

Anticipation by inherent disclosure requires that a single prior art reference necessarily includes the unstated limitation. The unpredictable nature of biological processes means that winning summary judgment of invalidity...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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