( October 9, 2026, 2:09 PM EDT) -- WASHINGTON, D.C. — A Federal Circuit U.S. Court of Appeals panel affirmed the U.S. Patent Trial and Appeal Board’s (PTAB) decision to uphold the rejection of a pro se appellant’s application for a patent on a method for grouping messages on a mobile device as indefinite; the panel held that the appellant forfeited his challenges to the rejection before PTAB and on appeal....