Category: doctrine of claim differentiation
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Federal Circuit Reinforces PTAB’s Authority to Institute Trial on Selected Claims in Synopsis v. Mentor Graphics Appeal
Newcomers to post-grant proceedings are often surprised by the PTAB’s claim-by-claim approach to patent challenges under the America Invents Act. When reporting statistics about IPRs, commentators tend to ignore these considerations: First, an IPR petition can be drafted to challenge all or some of the claims of a patent. So the set of challenged claims can be less…
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Federal Circuit Decision in In re Tanaka
You might recall that we discussed the BPAI decision in In re Yasuhito Tanaka in an earlier post. On April 15, the Federal Circuit reversed the BPAI decision and remanded the matter for further proceedings in accordance with the opinion. The Federal Circuit held that a patent owner that retains original patent claims and adds new narrower claims in…