Apple Loses Patent Ruling on Use of 'Common Knowledge'

Judges can’t rely on common sense alone when analyzing the validity of a patent, an appeals court ruled in a loss for Apple Inc. and Alphabet Inc.’s Google. A U.S. Patent and Trademark Office review board was wrong to use only “common knowledge and common sense” -- without more to back it up -- to invalidate a patent closely held Arendi S.A.R.L. had asserted against the tech companies, the U.S. Court of Appeals for the Federal Circuit ruled.