Mealey's (October 12, 2020, 12:41 PM EDT) -- ALEXANDRIA, Va. — In an Oct. 9 ruling, the Patent Trial and Appeal Board turned away a petition for post-grant review (PGR) of a patented vaping device intended for use with cannabis (GoFire Inc. v. Canopy Growth Corporation, No. PGR2020-00044, PTAB)....