The U.S. Court of Appeals for the Federal Circuit (CAFC) in a precedential decision today upheld two district court judgments for Apple, Inc. that found Wisconsin Alumni Research Foundation (WARF) had 1) abandoned its doctrine-of-equivalents theory (“WARF I”) and 2) that a second suit claiming infringement of the same patent via next-generation Apple products was barred by the previous decision (WARF II).

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