( December 15, 2025, 12:30 PM EST) -- WASHINGTON, D.C. — A Federal Circuit U.S. Court of Appeals panel on Dec. 12 affirmed a series of inter partes review (IPR) findings of the U.S. Patent Trial and Appeal Board (PTAB); the panel held that substantial evidence supported PTAB’s findings that all challenged claims in patents describing radio-frequency identification (RFID) technologies in various systems are unpatentable as obvious....