Doesn't that disprove the conspiracy theory of Big Pharma keeping "natural treatments" from being developed?
Natural treatments don't get developed when they aren't effective.
> The US Patent Trial and Appeal Board, an administrative law body of the national patent office, denied patent US9066920B2 on January 3, siding with petitioner Insys, a rival biotech firm.
> The patent, which has been embroiled in dispute since 2010, is for “the use of one or more cannabinoids in the treatment of epilepsy”. More particularly, to the use of one or a combination of cannabinoids, CBD oil, in the treatment of generalized or partial seizures.
Good luck with enforcement.