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Corona treating equipment suit settled

Enercon Industries Corp., Menomonee Falls, WI, and German partner Ahlbrandt Systems, Inc. filed suit against Pillar Technolo-gies, Hartland, WI, in 1986 alleging that Pillar infringed on two Ahlbrandt patents involving corona treating equipment, which treats the surfaces of plastic films or metal foils to improve ink adhesion.

Pillar countersued, alleging that Enercon's patent was not valid; this suit was stayed pending the outcome of the infringement suit. By the time the infringement case went to trial in July, 1993, Ahlbrandt/Enercon had removed one patent from the suit as well as six of the seven claims of the second patent, identified as Patent #4궞걎. On June 14, the U.S. District Judge for the Eastern District of Wisconsin ruled on the suit, ordering that it be dismissed. Having found in favor of Pillar, the judge found it unnecessary to decide on Pillar's claims of invalidity of the patent. Pillar says it has "won a resounding decision." Enercon says "the judge rendered a split decision" because while he did indeed find that Pillar hadn't infringed, "he did not rule that Enercon's patent or any of its claims was invalid as Pillar had argued." Pillar has motioned the court to rule on the validity issue.

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