Evaluating whether a patent claim is sufficiently “definite” under 35 U.S.C. § 112 requires looking beyond just the claim language itself. The Federal Circuit reaffirmed this fundamental principle in a recent decision...more
Last week, a split Federal Circuit panel reversed a decision invalidating certain computer-aided-design patent claims because the district court used an incorrect indefiniteness standard....more
In post-grant proceedings since 2018, the PTAB has applied the same claim construction standard as used in district court; a recent Memorandum confirms the PTAB will likewise apply the same standard that district courts use...more
Indefiniteness under U.S. patent law is a failure to satisfy the statutory requirements of 35 U.S.C. § 112(b), which reads: "The specification shall conclude with one or more claims particularly pointing out and distinctly...more