Zenon files further action against USFilter

OAKVILLE, ON, Canada, Jan. 18, 2005 (PRNewswire-FirstCall) -- On Jan. 12, Zenon Environmental Inc. filed further action against USFilter Corp., alleging infringement of its Patent No. 6,682,652 directed at an apparatus for withdrawing permeate using an immersed hollow fiber membrane.

The most recent action comes after a court ruling, mentioned in a Zenon news release on Nov. 9, 2004. The company noted in the release that it intends to appeal the ruling at the first appropriate opportunity and is confident of success. In any event, the patent that's the subject of the newly filed action has claims that aren't subject to the issues raised in the above ruling.

Zenon filed its original suit against USFilter in October 2003. The company is seeking damages and an injunction to stop the sale, manufacture and use of USFilter's MemJet and CMF-S products that Zenon feels infringe on its intellectual property, protected by patents issued in the United States.

Zenon continues to vigorously pursue its efforts regarding the suit and has not dropped its claims for monetary damages or infringement, although U.S. Filter has already ceased to practice the invention claimed in one of the patents. The company's management believes the merits of its actions to be as strong as when the suit was first filed.

About Zenon
Zenon Environmental Inc. (www.zenon.com) is a world leader in providing advanced membrane products and services for water purification, wastewater treatment and water reuse to municipalities and industries worldwide. In 2004, ZENON Environmental was ranked as Canada's top Corporate Citizen by Corporate Knights, a business publication addressing corporate responsibility. This is the second time it was selected for the honor. Zenon was picked as one of Canada's Top 100 Employers for the fifth consecutive year.

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