Please complete the relevant complaint form in its entirety; include your Social Security number or your Federal Employee Identification Number. Complaint - Verified.Please fill out the form below, but READ THIS FIRST. The Complaint or Petition I am responding to has labeled (numbered or lettered) paragraphs. This form is used in a court case in the Municipal Department of the Circuit Court of Cook County, Illinois. The attorney filing a case should complete the form as follows: I.(a) Plaintiffs-Defendants. • File the original and 1 copy of your. Illinois Legal Aid Online also provides forms with guided interviews called an Easy Form that will help you fill out the forms. This is called "serving" them. File your Summons and Complaint or Petition with the Circuit Clerk in the county where your court case should be filed.