Ultra Clean vindicated in 7 of 8 patents, despite mixed verdict

June 26, 2007 — /PRNewswire-FirstCall/ — MENLO PARK, CA — Ultra Clean Holdings, Inc., the parent company of Ultra Clean Technology Systems and Service, Inc. (UCT), a leading developer and supplier of critical subsystems for the semiconductor capital equipment industry, announced today that a verdict has been reached with respect to patent infringement claims brought against it by Celerity, Inc. On June 25, 2007, a jury found that UCT did not infringe one of the two patents at issue in the trial, but did infringe the other. Prior to trial, the United States District Court for the Northern District of California issued a summary judgment that UCT did not infringe four of Celerity’s patents which Celerity claimed had been infringed by UCT. In addition, Celerity had previously withdrawn claims of infringement by UCT of two of its other patents.

Celerity had alleged that UCT’s Predator(TM) gas delivery technology infringed eight of Celerity’s patents. However, Celerity ultimately prevailed with respect to only one of the eight patents. The jury awarded Celerity damages of $13,900. UCT’s Predator had not reached production, and accordingly the verdict will not have a material adverse effect on UCT’s operating results or financial condition.

“We respect the intellectual property rights of others,” says Clarence Granger, chairman and CEO of UCT. “We are happy that we were vindicated with respect to seven of the patents for which infringement was claimed, but were disappointed with the jury’s verdict on the eighth patent. We are currently reviewing the decision with our counsel with a view toward making a determination as to whether we will appeal the jury’s decision.”

About Ultra Clean Holdings, Inc.
Ultra Clean Holdings, Inc. is a developer and supplier of critical subsystems for the semiconductor capital equipment industry, focusing on gas delivery systems. Ultra Clean offers its customers a complete outsourced solution for gas delivery systems, improved design-to-delivery cycle times, component neutral design and manufacturing and component testing capabilities. Ultra Clean’s customers are primarily original equipment manufacturers of semiconductor capital equipment. The company is headquartered in Menlo Park, CA. Additional information is available at http://www.uct.com/

Source: Ultra Clean Holdings, Inc.

Jack Sexton, Chief Financial Officer, of Ultra Clean Technology,
+1-650-323-4100, [email protected]


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