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Amchem Products Inc. v. Coral Chemical Co.

Decided: November 22, 1988.

AMCHEM PRODUCTS, INC., PLAINTIFF-APPELLANT,
v.
CORAL CHEMICAL COMPANY, DEFENDANT/CROSS-APPELLANT



Amchem Products, Inc. (Amchem) appeals the judgment of the United States District Court for the Northern District of Illinois, Amchem Products, Inc. v. Coral Chemical Co., No. 83 C 2453 (N.D. Ill. August 31, 1987), holding invalid under 35 U.S.C. § 103 (1982) claims 1-6 of United States Reissue Patent No. 31,198 (the ' 198 or reissue patent), entitled "Method for Cleaning Aluminum at Low Temperatures." In a cross-appeal, Coral Chemical Co. (Coral) asserts that the court erred in not awarding Coral attorney fees based on alleged inequitable conduct by the patentees. We affirm the district court's determination of invalidity and its denial of attorney fees.

Affirmed

19881122

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