Intel, AMD Sued on memory cache technology

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Acacia Research (Newport Beach, Calif.), which develops, acquire, and licenses patented technologies, originally filed a patent infringement suit surrounding the coherency technology against core logic chipset maker Via Technologies in the District Court for the Northern District of California last December. The cases will likely by consolidated for pretrial purposes.
Acacia made a bit of noise April 19 when it filed a patent suit against Intel and Texas Instruments in the U.S. District Court for the Central District of California, centering around pipeline processor architecture for microprocessors.

It's not clear why Acacia is suddenly in a litigious mode, but there could be some connection from the fact that one of Acacia's two operating groups, CombiMatrix, formed a partnership with Intel last September on the use of its core IP. CombiMatrix is developing core technology to produce customizable arrays for biotechnology applications.

How the patent litigation will affect the partnership is unclear. Acacia did not return calls for comment by press time.

Acacia's latest patent suit revolves around technology related to interface circuits used by intelligent peripheral devices with cache memory to communicate with the main computer memory. By synchronizing main computer memory and main cache memory, the technology enables different memories to communicate and synchronize with one another.

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