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Cohesive Litigation
MILFORD, Mass., Nov 29, 2001 (BUSINESS WIRE) -- Waters Corporation (NYSE:WAT) was informed today of a jury's findings that one obsolete product of Waters Corporation, formerly part of a large product line, infringed a patent held by Cohesive Technologies, Inc. This one product, a column having dimensions of 1mm by 50 mm and packed with 30 micron polymeric particles, was removed from the Waters Corporation product line, in the United States, prior to the trial and was replaced by a product with better performance. This new improved product is believed to be outside the scope of the Cohesive patent-in-suit, U.S. Patent 5,772,874. The jury also found the Cohesive patent was valid.

The European Patent Office had previously issued a decision revoking Cohesive's European Patent which is directed to substantially the same subject matter.

Waters Corporation is disappointed with the findings; however, such findings are not likely to have any material effect on Waters Corporation's business. Waters Corporation intends to contest the findings vigorously through appeals to the Federal Circuit Court of Appeals.

CAUTIONARY STATEMENT

Certain statements contained herein are forward looking, and are subject to a variety of risks and uncertainties that are inherent in any legal proceeding. Such risks and uncertainties could cause the actual results to differ materially from those expressed in, or suggested by, such forward looking statements.

CONTACT:          Waters Corporation
                  Brian Mazar
                  V.P. Investor Relations
                  508-482-2193