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DANA CORP. v. IPC LTD. PARTNERSHIP

No. 86-CV-70231-DT.

674 F.Supp. 581 (1987)

DANA CORPORATION, Plaintiff, v. IPC LIMITED PARTNERSHIP, et al., Defendants.

United States District Court, E.D. Michigan, S.D.

April 6, 1987.

Attorney(s) appearing for the Case

Ernie L. Brooks, Southfield, Mich., for plaintiff.

Michael R. Dinnin, Birmingham, Mich., for defendants.

MEMORANDUM OPINION AND ORDER

ZATKOFF, District Judge.

This is a patent infringement case. Defendants have moved for summary judgment based on laches, estoppel and acquiescence. Plaintiff has timely responded.

I. FACTS

On March 3, 1970, patent no. 3,498,621 (hereinafter "621") was issued to an employee of Plaintiff Dana Corporation. The patent described a rubber valve stem seal used in automobiles. The patent had a seventeen year life, which...

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