(February 2, 2021, 1:59 PM EST) -- ALEXANDRIA, Va. — A research organization on Feb. 1 told the Patent Trial and Appeal Board that it should cancel a patent that recites isolated nicotinamide riboside kinase (Nrk) nucleic acid sequences, vectors and cultured cells because what is claimed was “known, or would have been obvious, in view of the understanding of the art at the time of invention.”...