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A jury initially found infringement and awarded over $30 million in damages. However, the U.S. Court of Appeals for the Federal Circuit reversed the judgment on August 15, 2014, finding the asserted claims of the '420 patent invalid for obviousness. The district court's judgment and awards were subsequently vacated in January 2016.

This Federal Circuit appeal, filed in 2014 and related to the underlying district court case 2:11-cv-00512, resulted in the overturning of the prior judgment of patent infringement.

This case was filed by IP Engine Inc against Microsoft Corp. in the New York Southern District Court. The narrative does not provide a clear outcome or status.