The battle between the piers started when Anheuser-Busch InBev suggested in ads during this year's Super Bowl that corn syrup was used to make Miller Lite and Coors Lite.
The new legal filing, which is heavily reworked, claims that an employee of the Budweiser Brewer sent information including the recipes for Bud Light and Michelob Ultra to an employee of Miller Coors around the time of the Super Bowl.
Miller Coors employee had previously worked for AB InBev. He allegedly requested the recipes via text messages, saying he had been asked by Miller Coor's top management to provide information on Bud Light, the legal complaint states.
According to court documents, Budweiser employees printed screenshots of the recipes, folded them up and removed them from the brewery. The employee then sent pictures of the recipes to Miller's Coors employee.
Anheuser-Busch InBev explains in court documents that the recipes contain specific blends of hops and barley, as well as the weight and volume of the ingredient. It describes the information as "extremely valuable" to competitors.
The brewer of Budweiser requests the return of his trade secrets and punitive damages against Miller Coors.
"Miller Coors respects confidential information and takes opposing claims seriously, but if the ingredients are a secret, why did they spend tens of millions of dollars on to tell the whole world what's in Bud Light? "Adam Collins, a spokesman for Miller Coors, said in a statement. "And why are the ingredients printed on Bud Light's packaging in giant letters?"
"Anheuser-Busch has lost three major federal rulings in this case, and now they are simply trying to distract from the basic fact that they deliberately misled American consumers," he added.
Representatives of Anheuser-Busch InBev did not immediately respond on Friday when asked to provide further details.