I have a 13 month year old and his father lives in california, while I live in PA. I moved back to PA when he was 2 weeks old. The father that I am divorced to never paid any child support and when I filed for full custody, he aggreed and signed the papers that were send into the state. I would like to know if he can change his mind and be able to get some custody of my child (not his child. If he wanted to be a father he would not of signed the custody papers). Also he does have legal problems and got discharged from the military.