Illinois Legal Aid Online provides a guided interview called an Easy Form that will help you fill out the forms. The forms below are some of the most common forms used in the Probate Division, but there are many more.To file a civil lawsuit, you must complete a Complaint form, a Summons form as well as a Civil Division Action Cover Sheet. All forms below with a "fillable icon" are documents that you can open "on-line", fill in the appropriate fields and then print on your printer. "The original signatures of both parties are required, however, it is acceptable for the original signatures to be on separate forms. Various Probate Forms on the website of the Clerk of the Circuit Court of Cook County. The Clerk of the Circuit Court serves the citizens of Cook County and the participants in the judicial system in an efficient, effective and ethical manner. The IMDMA and the Parentage Act of 2015 are the primary statutes that provide the Court with the authority to resolve cases in the Domestic Relations Division. Window Filing Hours: 8 a.m. You will need the free Adobe Reader to view these forms.