Exact’s Cancer-Screening Patent Invalidated in Geneoscopy Win

Geneoscopy Inc. convinced an administrative tribunal to invalidate a patent Exact Sciences Corp. is asserting in a Delaware federal court over technology used in Exact’s flagship Cologuard colorectal-cancer screening kits.

The Patent Trial and Appeal Board found Geneoscopy proved that all the challenged claims in Exact’s US Patent No. 11,634,781 are obvious in light of earlier innovations and therefore unpatentable, according to a final written decision issued Wednesday. Geneoscopy attached the ruling to a letter filed the same day in the US District Court for the District of Delaware, where the suit that prompted its PTAB challenge is pending.

The ...