Posted: November 25, 2009

DuPont Air Products NanoMaterials Receives Ruling in Patent Invalidity/Non-infringement Case Against Cabot Microelectronics

(Nanowerk News) DuPont Air Products NanoMaterials L.L.C. (DA NanoMaterials) remains confident in its legal positions following the judge's order denying all summary judgment motions in DA NanoMaterials' patent invalidity/non-infringement lawsuit against Cabot Microelectronics currently under way in the U.S. District Court for the District of Arizona.
The judge in the case denied summary judgment motions from both DA NanoMaterials and Cabot, including Cabot's claim that DA NanoMaterials infringed Cabot's tungsten chemical-mechanical planarization (CMP) patents. The Court has ordered the parties to submit pre-trial filings by December 16, 2009.
The denial of Cabot's summary judgment motion, coupled with a recent invalidation judgment rendered by Korean governmental authorities invalidating Cabot's tungsten CMP patent in Korea, strengthen DA NanoMaterials' position. DA NanoMaterials remains committed to its innovative and patented products. The company looks forward to defending its products in this U.S. lawsuit against Cabot and continuing to compete in the marketplace worldwide with its superior technology and customer service.
DuPont Air Products NanoMaterials L.L.C. is a joint venture between DuPont (Electronic Technologies) and Air Products and does not release its financial results. It was formed in 2000 and was expanded in April 2004 with the addition of the DuPont EKC Technology CMP slurry business and Air Products' addition of the CMP slurry business from the former Ashland Electronic Chemicals Division, which it acquired in 2003. The company operates a state-of-the art applications and formulation laboratory at its headquarters in Tempe, Arizona. It manufactures products in Asia, Europe and North America to serve the global semiconductor and wafer polishing markets. Additional information on the company can be obtained from its website --
About Air Products
Air Products serves customers in industrial, energy, technology and healthcare markets worldwide with a unique portfolio of atmospheric gases, process and specialty gases, performance materials, and equipment and services. Founded in 1940, Air Products has built leading positions in key growth markets such as semiconductor materials, refinery hydrogen, home healthcare services, natural gas liquefaction, and advanced coatings and adhesives. The company is recognized for its innovative culture, operational excellence and commitment to safety and the environment. In fiscal 2009, Air Products had revenues of $8.3 billion, operations in over 40 countries, and 18,900 employees around the globe. For more information, visit
About DuPont
DuPont Electronic Technologies is a leading supplier of electronic materials, including materials for the fabrication and packaging of semiconductors, materials for hybrid, rigid and flexible circuits, and materials for advanced displays. For more information, please visit
DuPont is a science-based products and services company. Founded in 1802, DuPont puts science to work by creating sustainable solutions essential to a better, safer, healthier life for people everywhere. Operating in more than 70 countries, DuPont offers a wide range of innovative products and services for markets including agriculture and food; building and construction; communications; and transportation.
Source: DuPont Air Products NanoMaterials (press release)
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