(RTTNews) -  Cabot Microelectronics Corp. (CCMP: News ) said that the U.S. District Court for the District of Arizona denied a motion filed by DuPont Air Products NanoMaterials for summary judgment of invalidity of three Cabot patents.

The Court also denied DuPont Air Products NanoMaterials' motion for summary judgment of non-infringement of these patents. The Court has ordered the parties to submit pretrial filings by December 16.

The litigation, which the company had filed in January 2007, involves DuPont Air Products NanoMaterials' manufacture and marketing of certain CMP slurries that the company believes infringe five patents owned by Cabot Microelectronics.
The affected DuPont Air Products NanoMaterials products include certain products used for tungsten CMP. Cabot Microelectronics is seeking damages and injunctive relief against DuPont Air Products NanoMaterials in the litigation.

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by RTT Staff Writer

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