Ropat Corp. v. McGraw-Edison Co.

MEMORANDUM OPINION AND ORDER

McLAREN, District Judge.

This matter is before the Court on the motion of the defendant, Marshall Field & Co., for summary judgment.1 For the reasons set forth below, the motion will be granted.

This action involves alleged infringement of U.S. Letters Patent No. 3,611,910 (’910), a corn popper. (For a complete discussion of the patent, see this Court’s prior opinion, Ropat Corp. v. West Bend Co., 382 F.Supp. 1030 (N.D.Ill. [Ropat I] 1974). The defendant claims that the utility ’910 patent is invalid because of double patenting, created by the prior award of Design…