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Federal Circuit Affirms PTAB’s Analysis Finding Product-by-Process Claim Narrowed During Prosecution Valid Over Prior Art

In a precedential opinion issued on March 4, 2025, in Restem, LLC v. Jadi Cell, LLC, No, 23-2054, the U.S. Court of Appeals for the Federal Circuit affirmed the PTAB’s claim construction and ruling that product-by-process...more

Federal Circuit Affirms Obviousness of Rifaximin Polymorph Patents and Denial of Motion to Modify Judgment After Post-Trial...

In a precedential opinion issued on April 11, 2024 in Salix Pharmaceuticals, Ltd. v. Norwich Pharmaceuticals Inc., Nos. 22-2153, 23-1952, the U.S. Court of Appeals for the Federal Circuit affirmed the U.S. District Court for...more

Federal Circuit Reverses PTAB Finding Tarceva® Method of Treatment Claims Invalid for Lack of Reasonable Expectation of Success...

In a precedential opinion on October 4, 2019, the United States Court of Appeals for the Federal Circuit, in OSI Pharmaceuticals v. Apotex, No. 2018-1925, reversed the Board’s Final Written Decision in an inter partes review...more

Federal Circuit Clarifies the Requirements for a Teaching Away by the Prior Art

In a precedential opinion issued on October 11, 2017, the United States Court of Appeals for the Federal Circuit reversed the Patent Trial and Appeals Board’s (“PTAB”) finding of non-obviousness where the prior art taught...more

Federal Circuit Thoroughly Reverses District Court Findings of Velcade® Patent Obviousness

On July 17, 2017, the United States Court of Appeals for the Federal Circuit reversed, in a precedential opinion in Millennium Pharmaceuticals, Inc. v. Sandoz, Inc., No. 2015-2066 (Fed. Cir. July 17, 2017), a district court...more

Federal Circuit Reiterates That Patent Prosecution Disclaimers Must Be “Clear and Unmistakable”

On March 3, 2017, the United States Court of Appeals for the Federal Circuit reaffirmed, in a precedential opinion, that prosecution disclaimers may only limit the scope of a claim where the disclaimer is “both clear and...more

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