Having one’s name on a birth certificate does not legally establish paternity. A person listed as the father does not have any legal rights or any obligation to financially support the child. A legal action to establish paternity is needed. Legal paternity can only be established through a paternity agreement (time sharing schedule and parenting plans) signed by both parties or by a court action.
If one believes that he is not the father of a child, he may contest a child support order through a paternity action. DNA may need to be submitted in order for paternity to be established.