Federal Circuit Affirms Patent Invalidity, Emphasizes Need For Substantive Expert Testimony
08/26/2025
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 & Draglines, Inc.’s (“Wilco”) amphibious vehicle patent are invalid as anticipated. Wilco Marsh Buggies & Draglines, Inc. v. Weeks Marine, Inc., C.A. No. 2023-2320 (Fed. Cir. Aug. 19, 2025).