Who owns Batman's copyright in the DCU?

I'd think it be Bruce Wayne since he revealed he financed Batman. But maybe not because someone else can make a fast food restaurant? If Batman can't have an owner to his rights does that mean there's a lot of different products including embarrassing ones? See this is why Bruce needs Booster Gold, say what you want about selling his image but at least Booster had the power to shut down people trying to steal it.