Article: Digene Files Declaratory Judgment Action Against Enzo Biochem.

Business/Technology Editors & Health/Medical Writers

BOXBOROUGH, Mass.--(BUSINESS WIRE)--March 15, 2002

Cytyc Corporation (Nasdaq:CYTC) was advised today that Digene Corporation has filed a declaratory judgment action against Enzo Biochem, Inc. in the United States District Court for the District of Delaware, seeking a declaratory judgment that Digene's Hybrid Capture(R) products do not infringe any valid claims of Enzo's United States patent no. 6,221,581 B1 (the "`581 Patent"), and that the claims of the `581 Patent are invalid.

On February 19, 2002, Cytyc and Digene announced that they had signed a definitive merger agreement pursuant to ...

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