by Dennis Crouch Forum US v. Flow Valve (Fed. Cir. 2019) The question here is whether the broadened claims in Flow Valve’s U.S. Patent No. RE45,878 satisfy the heightened written description requirement for reissue patents. In order to broaden claims as part of a reissue application, the patentee must show that the new scope was considered … Continue reading Heightened Written Description Standard for Reissue Patents