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There is no case here as the Patent office has already ruled that there is no infringment.

”Oddly enough, Sony’s own patent, filed in 2001 and issued in 2007, actually lists the 1991 patent as a citation. In other words, Sony’s own patent lawyers have already seen the old patent and deemed it not to be a threat, and the U.S. Patent Office apparently agreed when it issued Sony the patent in June."

http://news.digitaltrends.com/news/story/13725/ps3s_cell_processor_faces_patent_challenge

This should be thrown out pretty quickly.