Intel has responded to Monday's lawsuit from Intergraph with a countersuit, alleging that Intergraph is laying claim to patents that are invalid.
Intergraph's suit accuses Intel of infringing patents covering cache memory designs. These technologies, Intergraph says, were patented for its Clipper microprocessor, but Intel has put them "at the heart" of the Pentium family.
Intel claims they are not related to any Pentium technology and that it had no obligation to share proprietary information on the Pentium cache design with Intergraph. "We don't think they invented what they think they invented," said Intel spokesman Chuck Molloy.
Intel's countersuit is separate from the official response it will shortly make to the Intergraph action, which also alleges anti-competitive practices. This is based on Intel's decision to cease cooperating with its new enemy on several joint projects, once Intergraph started claiming to OEMs that it owned the patents in question.
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