Cabot Microelectronics Corporation Receives Ruling From Federal Circuit Court of Appeals - Yahoo! Finance

Cabot Microelectronics Corporation (Nasdaq: CCMP - News), the world's leading supplier of chemical mechanical planarization (CMP) polishing slurries and a growing CMP pad supplier to the semiconductor industry, announced today that the validity of its tungsten patents remains upheld as the company's appeal in its patent enforcement action against DuPont Air Products NanoMaterials, LLC ("DANano") has been decided with the Federal Circuit Court of Appeals affirming proceedings at the District Court.