Mealey's (April 13, 2020, 12:26 PM EDT) -- ALEXANDRIA, Va. — In an April 8 request for post-grant review (PGR), two petitioners maintain that the U.S. Patent and Trademark Office (PTO) erred when it recently issued GM Global Technology Operations LLC a design patent for a vehicle front skid bar (LKQ Corporation, et al. v. GM Global Technology Operations LLC, No. PGR2020-00055, PTAB)....