On March 24, the U.S. Court of Appeals for the Federal Circuit (CAFC) affirmed a Patent Trial and Appeal Board (PTAB) Precedential Opinion Panel’s (POP’s) decision allowing patent owner DynaEnergetics Europe GmH to amend its claims, and also affirmed the PTAB’s decision that the original claims of the patent were unpatentable. Hunting Titan, Inc. petitioned for inter partes review of claims 1–15 of the U.S. Patent No. 9,581,422, asserting grounds of unpatentability based on anticipation and obviousness, including allegations that the claims were anticipated by U.S. Patent No. 9,689,223 (Schacherer). The Board instituted trial on all grounds and found all of the original claims unpatentable.

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