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PENNWALT CORP. v. AKZONA INC.

Civ. A. No. 79-157.

570 F.Supp. 1097 (1983)

PENNWALT CORPORATION, Plaintiff, v. AKZONA INC. and Armak Co., Defendants.

United States District Court, D. Delaware.

August 22, 1983.

Attorney(s) appearing for the Case

Robert K. Payson and Michael D. Goldman of Potter, Anderson & Corroon, Wilmington, Del., Arthur H. Seidel and Daniel A. Monaco of Seidel, Gonda & Goldhammer, P.C., Philadelphia, Pa., of counsel, for plaintiff.

John G. Mulford of Theisen, Lank, Mulford and Goldberg, P.A., Wilmington, Del., and Phillip M. Mayer of Leydig, Voit, Osann, Mayer & Holt, Ltd., Chicago, Ill., for defendants.

OPINION

LATCHUM, Chief Judge.

Pennwalt Corporation ("Pennwalt") commenced this patent suit on March 26, 1979 in which it seeks a declaratory judgment of invalidity and unenforceability of U.S. Patent No. 4,196,292 ("the '292" or "Nemeth patent") entitled "Stable Water Dispersions of Encapsulated Parathion," issued August 15, 1978 to Harold C. Nemeth. (Docket Item ["D.I."] 1.) The named defendants are Akzona, Inc. ("Akzona"), and its subsidiary Armak Co....

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