InterDigital loses another round in patent fight

By Diane Bartz WASHINGTON (Reuters) - InterDigital Inc, a patent licensing firm, lost an infringement fight on Wednesday as a U.S. appeals court ruled that wireless phones made by Nokia, since purchased by Microsoft, and ZTE Corp do not infringe on InterDigital patents. InterDigital's share price was down 3.4 percent for the day, at $49.14. The U.S. Court of Appeals for the Federal Circuit upheld a decision by the International Trade Commission, which found the patents were not infringed. The Federal Circuit also upheld the ITC's decision to declare the fifth patent invalid because it is obvious, which means it cannot be infringed.



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