One Israeli researcher has synthesized 22 different versions of THC to treat specific neurological conditions. “There’s reason to believe there’s a cornucopia of medicines in there,” Kimball says—medicines that, in theory, are patentable. At foreign labs, and even at state-licensed operations in Colorado and Washington, plant scientists are growing genetically modified varieties that optimize for certain properties.
https://www.bloomberg.com/news/features/2018-03-07/america-is-giving-away-the-30-billion-medical-marijuana-industry
https://www.bloomberg.com/news/features/2018-03-07/america-is-giving-away-the-30-billion-medical-marijuana-industry