That patent is illegal due to "prior art" ... it was in the US Pharmacopia in 1910 if I remember right. It has a place in natural med lore for millenia. It was mentioned in the herbal tablets in King Ashurbannipal's library in 7c BC Nineveh if I remember right. The USPTO, WPTO, JPTO, they all need to be plowed under. The edited genes in bT corn have a patent, but it is illegal. It is a derivative work. The do not have the permission of our Creator to make or patent derivative works. He has sole Authorship. A crooked PTO granted illegal patents. Two things...
.1. Patents are on novel features claimed for an invention but it might have NEVER proven feasible and never actually worked. Many do. Many are only ideas. A patent does not mean it works.
.2. Patents are granted on the basis of applications and the due diligence of those reviewing. If the reviewer pretends there is no prior art in THC cures, it is a lie. The patent is void.

Calmly assess their moves. Legal reviews coming?