On August 30, SoftView LLC filed a petition for en banc rehearing with the U.S. Court of Appeals for the Federal Circuit (CAFC), arguing that the court’s recent decision incorrectly applied the doctrine of collateral estoppel/issue preclusion to a series of amended claims. In the original ruling, which was covered in a separate article, the CAFC held that the Patent Trial and Appeal Board (PTAB) properly applied the estoppel provision of 37 CFR § 42.73(d)(3)(i) in invalidating SoftView’s amended claims submitted in inter partes reexaminations based on a prior inter partes review (IPR) decision.

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