Cannabis Extract Patent Assertion Underscores Issue of Limited Prior Art for Marijuana Inventions

The suit, filed in the District of Colorado, involves the assertion of cannabis patent claims covering liquid formulations of highly enriched extracts of plant cannabinoids… United Cannabis alleges that Pure Hemp has engaged in willful infringement of the ‘911 patent. Pure Hemp’s Vina Bell 5000mg product, which was purchased and tested for chemical composition by United Cannabis, contains a cannabinoid formulation which allegedly infringe upon at least claim 10 of the ‘911 patent, which claims a cannabinoid formulation wherein at least 95 percent of the cannabinoids is cannabidiol (CBD). United Cannabis attempted to engage Pure Hemp in licensing discussions in early May of this year but Pure Hemp continues to sell the allegedly infringing products without a license.
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