Illinois Summons-Parentage is a legal document issued by the Circuit Court of the county in Illinois where the child or children reside. It is a summons issued to a parent, or two parents, to appear in court and determine paternity. Illinois Summons-Parentage can be issued in two different types of cases: a paternity action or a parentage action. In a paternity action, the court determines if a man is the legal father of a child, while in a parentage action the court will determine the legal parentage of a child who was born to unmarried parents. The summons requires the parent or parents to appear in court to answer questions and provide evidence pertaining to the parent-child relationship. It also provides the parent or parents with information about their legal rights and obligations related to parentage.