Mykrolis Requests Court to Hold Pall Corporation in Contempt

Mykrolis Requests Court to Hold Pall Corporation in Contempt



BILLERICA, Mass., June 21  /PRNewswire-FirstCall/ -- Mykrolis (NYSE:MYK)
announced today that it filed a request with the United States District Court
in Boston that Pall Corporation (NYSE:PLL) be held in contempt of court.
Mykrolis believes that Pall has defied the Court's preliminary injunction order
issued on April 30, 2004 that prohibits Pall from importing and selling certain
of Pall's photoresist filtering products or colorable imitations thereof.  Pall
is continuing to sell its EZD-3 products, which are renamed versions of its
EZD-2 products, both of which Mykrolis contends are subject to the preliminary
injunction order.

The Court's April 30, 2004 preliminary injunction order enjoined Pall and its
affiliates from further infringement of Mykrolis's U.S. patents at issue in the
litigation, as well as from "making, using, selling, or offering to sell within
the United States, or from importing into the United States, the product now
being sold under the name PhotoKleen(TM) EZD-2 Filter Assembly, or any
colorable imitation thereof, until further order of this Court."  Pall is
appealing this order from the Court.

Peter W. Walcott, Vice President and General Counsel, commented: "We believe
the actions by Pall that prompted our legal actions are very serious. We intend
to continue to actively and aggressively pursue this litigation and to protect
our intellectual property rights. As part of these efforts we are requesting
that the Court hold Pall in contempt for not acting in conformity with the
preliminary injunction order."

About Mykrolis

Mykrolis Corporation, which reported sales of $186 million in fiscal 2003, 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 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. Based in Billerica, Massachusetts, Mykrolis is formerly Millipore
Microelectronics, Inc.  For more information, visit http://www.mykrolis.com/.

Contact:

Steve Cantor, Director of Investor Relations and Corporate Communications
978-436-6500,  

DATASOURCE: Mykrolis Corporation



CONTACT:  Steve Cantor, Director of Investor Relations and Corporate

Communications, [phone], 



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

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