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A federal appeals court upholds the dismissal of a patent infringement lawsuit filed by W.L. Gore that accused Medtronic of violating patents covering stent graft manufacturing processes.

A federal appeals court upheld a lower court's decision to toss a lawsuit filed in 2010 accusing Medtronic (NYSE:MDT) of violating patents held by W.L. Gore & Associates covering stent graft manufacturing techniques.

Judge Mark Davis of the U.S. District Court for Eastern Virginia dismissed Gore's claims last year, saying the ruling made Medtronic's counterclaims moot.

Today the U.S. Court of Appeals for the Federal Circuit upheld that ruling, without comment, according to court documents.

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