(January 8, 2024, 2:18 PM EST) -- WASHINGTON, D.C. — A March 2023 ruling by the Federal Circuit U.S. Court of Appeals largely rejecting a challenge by tech leaders to U.S. Patent and Trademark Office (PTO) guidance for the Patent Trial and Appeal Board when deciding whether to institute inter partes review (IPR) will stand, in view of the U.S. Supreme Court’s Jan. 8 denial of a petition for writ of certiorari....