U.S. District Court Rules in Favor of Mykrolis in Patent Dispute With Pall Corporation

U.S. District Court Rules in Favor of Mykrolis in Patent Dispute
With Pall Corporation
Court orders preliminary injunction against Pall 


BILLERICA, Mass., May 3  /PRNewswire-FirstCall/ -- Mykrolis Corporation 
announced today that the United States District Court for the District of
Massachusetts has ordered Pall Corporation to stop selling its PhotoKleen EZD-2
Filter Assembly products to its customers.

Pall's PhotoKleen EZD-2 Filter Assembly products are the subject of a Mykrolis
law suit charging Pall with infringement of two U.S. patents owned by Mykrolis.
 The patents cover the technology used in semiconductor manufacturing for
point-of-use photochemical dispense and filtration of photoresists and
solvents.

After a hearing on Mykrolis's request for a preliminary injunction, the Court
ruled in favor of Mykrolis and ordered Pall to immediately stop making, using,
selling, or offering to sell within the US, or importing into the U.S., its
PhotoKleen EZD-2 Filter Assembly products or "any colorable imitation" of those
products.

The Court concluded that Mykrolis had "made a 'clear showing' of its likely
success on the merits on both validity and infringement" and, as a result, was
entitled to the preliminary injunction.

C. William Zadel, Chairman and Chief Executive Officer, commented: "We are
extremely gratified by the Court's decision.  Investing in research and
development to develop innovative technologies that enable our customers'
processes is the cornerstone of our strategy, and the Court's decision allows
for clear protection of our intellectual property."

The full text of the court ruling can be found on the following website link:
http://pacer.mad.uscourts.gov/dc/cgi-
bin/recentops.pl?filename=otoole/pdf/mykrolis%20order%20on%20pi.pdf

About Mykrolis

Mykrolis Corporation, based in Billerica, Massachusetts, is a worldwide
developer, manufacturer and supplier of liquid and gas delivery systems,
components and consumables used to precisely measure, deliver, control and
purify the process liquids, gases and chemicals, as well as the deionized
water, photoresists and vacuum systems utilized in the semiconductor
manufacturing process.  In addition, the Company's products are used to
manufacture a range of other products, such as flat panel displays, high purity
chemicals, photoresists, solar cells, gas lasers, optical disks and fiber optic
cables.  For more information, visit http://www.mykrolis.com/. 

DATASOURCE: Mykrolis Corporation



CONTACT:  Bertrand Loy, Chief Financial Officer, or Steve Cantor,

Director of Investor Relations and Corporate Communications, both of Mykrolis

Corporation, [phone], or  



Web site:  http://www.mykrolis.com/ 

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