Paternity issues can arise when a child is born to unwed parents. The question regarding the child's biological father may come up once the child is born. In some cases, the father voluntarily acknowledges that the child is his, thus not requiring a court hearing to establish paternity. However, not all cases are like that. According to paternity dispute lawyers, paternity must be established so the custodial parent can earn the right to seek child support from the biological father.