Rehearing and Rehearing En Banc Denied: June 14, 2002.
PROST, Circuit Judge.
Plaintiffs Mitsubishi-Tokyo Pharmaceuticals, Inc. and Abbott Laboratories appeal the decision of the United States District Court for the Northern District of Illinois granting defendants Dey L.P. and Dey, Inc. summary judgment of noninfringement of U.S. Patent No. 4,397,839 ("the '839 patent"). Because the district court improperly precluded plaintiffs...
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