father left house/property to brother and I before his death. we both live in the house and both pay expenses. brother now saying he is going to a judge to have my half "signed" over to him. claims he has a 70% ownership, not sure how he came up with that since my father left to both of us. trying to find out if he has a legal basis for this. everything I have ever read says he can buy me out but he says he's not going to do that.