Levi Strauss & Co has entered into another affray with jeans maker Guess Inc, who it accuses of stealing its arced stitching design for the second time. According to a federal lawsuit filed in San Francisco, Levi alleges that Guess is selling denim jeans and jackets with a "highly similar" stitching pattern. It says the infringement is causing incalculable and irreparable damage to the value of Levi Strauss' trademark and good name.