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The US International Trade Commission (ITC) has voted to investigate a patent complaint against select short-wavelength light emitting diodes, such as the ones used by Blu-ray players. The complaint was filed by Gertrude Neumark Rothschild of Hartsdale, NY, on February 20, 2008, and alleges that some aspects of Blu-ray technology infringes on patents.

Thirty companies, including Sony and other Blu-ray player manufacturers, are listed as respondents. The ITC investigation doesn't necessarily mean any foul play has been committed -- the ITC states they have "not yet made any decision on the merits of the case." This could be over quickly, or Sony can expect yet another long-haul legal battle over its technologies.

source

Yay, the sony trademark infringement tradition is still going strong i see

If you would have read the piece above, you'd know that this has nothing to do with trademark infringement. As for the alleged "Patent Infringement", well that happens to companies all the time, some are valid, some are not, but this is not specific to Sony