According to, “Paternity” is the legal term used to describe the legal relationship a biological father and his child.

In the State of Illinois, if the birth mother of a child is married, was married, or a civil union at the time of the child’s birth or inside of 300 days prior to the child’s birth, the man the birth mother was in a civil union or to whom she was married to at that time is legally assumed to be the biological father of the child.

The Longe Law Firm is on your side whether you are wanting to prove or contest paternity.