( January 29, 2025, 8:27 AM EST) -- WASHINGTON, D.C. — A pro se inventor whose patent application for a tire sealant apparatus was rejected by the U.S. Patent and Trademark Office (PTO) as being indefinite was unsuccessful in his appeal to the Federal Circuit U.S. Court of Appeals, where a panel found that the appellant failed to rebut an examiner’s finding that the proposed patent’s terms were indefinite....