Chicago-based MillerCoors ended its legal silence about Stone Brewing Co.'s lawsuit regarding MillerCoors' Keystone products this week, and did so with an aggressively worded counterclaim that asks the California craft brewer to acknowledge the beer conglomerate's right to call its light economy beers "stones."
In reaction to MillerCoors, which maintains significant brewing operations in Milwaukee, emphasizing the word "stone" in its presentation of Keystone Light, Stone Brewing and founder Greg…