( August 19, 2026, 2:21 PM EDT) -- WASHINGTON, D.C. — Substantial evidence supported the U.S. Patent Trial and Appeal Board’s (PTAB) finding that a publication describing facial-analysis research was analogous prior art, a Federal Circuit U.S. Court of Appeals panel held, affirming PTAB’s decision that claims of a patent held by television research entity Nielsen Co. (US) LLC were unpatentable as obvious....