Paternity is legal fatherhood—and it is one of the most important steps in the child support process. Establishing paternity benefits the child, the father, including the entire family. If parents are unmarried, the biological father may not have legal rights to a child until paternity is established. In most cases, the paternity suit must be established within four years of the child's birth. The self-help guides and articles below can help you accomplish your legal goals involving paternity in Texas.