( March 27, 2025, 2:22 PM EDT) -- WASHINGTON, D.C. — A Federal Circuit U.S. Court of Appeals panel said the U.S. Patent Trial and Appeal Board (PTAB) rightly held that all challenged claims in a patent held by Xerox Corp. related to messaging are unpatentable as obvious, affirming the results of an inter partes review (IPR) proceeding brought by Meta Platforms Inc....