A federal judge declared a mistrial Friday in LeapFrog Enterprises Inc.’s lawsuit seeking $58 million from Mattel Inc.’s Fisher-Price unit over a patent for interactive books that help children learn ...
Mattel Inc. didn’t violate a LeapFrog Enterprises Inc. patent, a federal district court in Delaware ruled Thursday. LeapFrog had sued Mattel unit Fisher-Price in October 2003, alleging that its ...
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