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Receives Favorable Decision in Patent Infringement Action Against the Perkin-Elmer Corporation
MILFORD, Mass.--(BUSINESS WIRE)--Dec. 9, 1998--TA Instruments, Inc., a subsidiary of Waters Corporation (NYSE: WAT), today reported that on December 7, 1998, the U.S. District Court for the District of Delaware ruled, that as a matter of law, The Perkin-Elmer Corporation was liable for infringing TA Instruments, Inc.'s modulated differential scanning calorimetry patents. The decision reverses an earlier jury trial finding of no liability. The Court found The Perkin-Elmer Corporation liable under all seven claims which TA Instruments Inc. had asserted at trial. The decision provides for entry of an injunction, prohibiting The Perkin-Elmer Corporation from any further manufacture, use or sale of infringing instruments. The decision also provides for a new trial to determine damages.

Waters Corporation holds worldwide leading positions in three complementary analytical instrument technologies -- high performance liquid chromatography, thermal analysis, and mass spectrometry -- which account for $3 billion in annual revenue of the $14 billion analytical instrument industry total. TA Instruments, Inc. is the world's leader in the thermal analysis segment.

     Waters Corporation, Milford
     Brian K. Mazar, 508/482-2193