Rovi, which sells television guide programs to cable providers, lost a patent fight with Amazon.com on Tuesday when an appeals court upheld a decision by a Delaware district court. Rovi had accused Amazon of infringing on two patents, one which creates an electronic program guide on a television screen and another which allows a viewer to select and purchase a pay-per-view program. In both patents, Judge Richard Andrews of the U.S. District Court for the District of Delaware narrowly defined what the claims, or portions of patents, did in such a way that forced Rovi to drop its argument for infringement.
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