( August 28, 2025, 10:20 AM EDT) -- WASHINGTON, D.C. — A panel in the Federal Circuit U.S. Court of Appeals considered for the first time a derivation proceeding that was filed pursuant to the 2011 Leahy-Smith America Invents Act (AIA), which allows “a first-inventor second-filer to pursue such a claim against a first-filer,” finding that the U.S. Patent Trial and Appeal Board (PTAB) had substantial evidence to support its judgment in favor of a defendant-appellee in a dispute over the inventorship of an ointment for wound treatments....