Cognex Corp. of Natick, Mass., a developer of machine vision sensors and systems, has announced that the US District Court ruled in its favor over Acacia Research Corp. of Newport Beach, Calif., and its subsidiary VData LLC, along with Veritec Inc. of Golden Valley, Minn., and its subsidiary VCode Holdings LLC. The lawsuit filed by Cognex claimed that US Patent No. 5,612,524 for capturing and reading 2-D symbology codes is invalid and unenforceable due to unjust conduct by the defendants while obtaining the patent.