(This story originally appeared at Marijuana Business Daily.) Canadian cannabis producer Canopy Growth Corp. is suing UK-based GW Pharmaceuticals in U.S. federal court, alleging that GW is knowingly infringing upon Canopy’s intellectual property. GW used a Canopy-patented method to extract the CBD that’s the active ingredient in its Epidiolex medication, according to a complaint filed … Continue reading Cannabis firm Canopy Growth sues GW Pharma, claiming patent infringement