Court of Appeals for the Seventh Circuit November 17, 1982, 81-2500 (American Can Company v. Crown Cork & Seal Company, Inc.)

HARLINGTON WOOD, Jr., Circuit Judge.

Plaintiff, American Can Company, charged defendant, Crown Cork & Seal Company, Inc., with violating American’s 1967 patent on a one piece seamless cup-like steel container and the drawing and ironing process for making it.

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Crown, with a similar product, denied infringement and further claimed that the patent was invalid under 35 U.S.C.