Cummins, Inc. v. TAS Distrib. Co., Inc.

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Since 2003, Cummins and TAS have been engaged in three separate actions regarding idle-control technologies for heavy-duty truck engines. Earlier suits concerned breach of a master license agreement between the parties. In a 2009 action, Cummins sought a declaratory judgment that claims of TAS’s 703 and 469 patents are invalid and unenforceable. The district court found that the suit was barred by the doctrine of res judicata in light of a decision in an earlier claim. The Federal Circuit affirmed. Cummins could have pursued claims regarding invalidity and unenforceability of the TAS patents in prior litigation, which featured the same parties, arose from the same group of operative facts, and resulted in a final resolution on the merits so that res judicata bars Cummins’ defenses under 35 U.S.C. 102 and 103. View "Cummins, Inc. v. TAS Distrib. Co., Inc." on Justia Law