Because enforcement of patent rights in the U.S. is governed by federal law, the Schedule I status of cannabis continues to cast uncertainty over whether cannabis patent rights can actually be challenged or enforced. That uncertainty diminished with the filing of the first patent infringement case in federal court on a patent covering a cannabis-related technology on July 30, 2018 when United Cannabis Corporation (“UCANN”) sued Pure Hemp Collective, Inc. (“Pure Hemp”) in the United States District Court for the District of Colorado (United Cannabis Corporation v. Pure Hemp Collective, Inc.(Case No.: 1:18-cv-01922-NYW) for patent infringement. (https://www.duanemorris.com/articles/patent_litigation_cannabis_industry_2_cases_to_review_0319.html) UCANN alleged that Pure Hemp is selling products that are encompassed by the claims of its patent, US 9,730,911. Pure Hemp denied infringement and counterclaimed that the UCANN patent is invalid and should never have been granted because similar products were well known long before the filing date of the patent.
These proceedings have now moved to the claim construction stage, a stage specific to patent litigation, The claims in a patent specify the rights to which the patent owner is entitled, just as language in a deed to real property specifies the boundaries of the real property. But, unlike the quantitative verifiable measurements taken to define the boundaries of real property, claim language can be imperfect and open to more than one interpretation. Continue reading Cannabis patent litigation update: construing cannabis claims