US companies battle in filter cartridge patent infringement
Pall Corporation has filed a patent infringement action against Entegris. The suit alleges that the Entegris Impact filter cartridge line infringes four Pall patents: U.S Patent Nos. 5,543,047, 5,690,765, 6,113,784, and 7,195,122. The suit seeks compensatory damages and a permanent injunction precluding Entegris from selling the infringing products. Pall's material science and manufacturing capabilities are cornerstones of the company's technology.
"Our patents are core assets. They represent countless hours of work by our scientists and engineers and millions of dollars of corporate resources. We vigorously protect our intellectual property rights," said Steve Chisolm, President, Pall Microelectronics.
At issue in the suit are two highly innovative and successful Pall technology platforms: the Ultipleat laid-over pleat filter pack and the EZD low hold-up volume filter capsule.A separate action filed by Pall in 2005 involving different Entegris products is ongoing. Pall believes that certain Entegris Quickchange and Waferguard products infringe on two other Pall patents.
