Producer Merion Joseph Powers sued Katt after he racked up a $28,000 bill in his studio, but refused to pay it.
Powers filed legal papers saying that when he pressed Williams for the money, Katt paid him a visit with his attack dog in tow.
According to court documents, Powers alleges that Katt gave his dog a “verbal attack signal” to go after his animal leaving it with “substantial and nearly life-threatening injuries.”
TMZ now reports that when the men faced off in court recently, the judge ruled in Powers’ favor and ordered Katt to pay the man a whopping $577k.
TMZ’ Calls to Katt’s reps were not returned.