NEW YORK Stainless steel trolley manufacturer VGK Inc. is suing GM Stainless Inc. for allegedly infringing its patent for a process used to manufacture overhead trolley systems for meat-packing plants.
Pella, Iowa-based VGK filed the lawsuit against GM Stainless in U.S. District Court in Iowa on Aug. 20.
VGK was granted a patent in September 2002 for the process, which is used to create a curved side of stainless steel rail with increased hardness.
VGK alleges that Branchburg, N.J.-based GM Stainless sold a product that infringes this patent to Sioux City, Iowa-based AllPower Inc., a distributor of packinghouse equipment and supplies.
VGK is seeking to block GM Stainless from making and selling the products it alleges were produced illegally as well as damages for past infringement that are at minimum equal to appropriate royalties for use of the patent.
A spokeswoman for GM Stainless declined to comment to AMM, saying that the company had no knowledge of the lawsuit.