Quoted from gonzo73:Look up the 2009 sabbath lawsuit, as of now Tony and Ozzy/sharon own Sabbath 50/50.
Nobody knows how that was settled! All confidential. I believe it had more to do with merchandising - if Tony was selling a Black Sabbath t-shirt ozzy wanted a piece of it.
And like I said, Tony always said it didn't shake out like that. According to him he owns the name. Heaven and Hell toured and recorded years BEFORE that lawsuit in 2009, so why wouldn't he have called it Sabbath at that point if he wanted to?
They even recorded two new songs in 2006 with Dio under the name Black Sabbath - Devil Cried and Ear in the wall. Pretty good songs - Devil Cried is great.