ITC Opens Patent Probe of Blu-ray Disc Players

The U.S. International Trade Commission said it would launch an investigation into some 30 companies including Sony Corp. on possible patent infringements related to Blu-ray disc players and other products. The commission said on its Web site that the products involved are short-wavelength light-emitting diodes and laser diodes used in such electronics as handheld mobile devices, traffic lights and high-definition DVD players.

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