STEP 1: USING BLACK INK ONLY, Fill out the "Civil Cover Sheet. " â–« Write in "Maricopa" as the county.View forms and instructions to file a Civil Complaint in Maricopa County Superior Court. If you'd like to file a complaint against a fiduciary, please fill out the complaint form and mail, fax or hand deliver to the address below. Field 1: Fill in the county in which the action is brought. Be consistent with other forms. Was my complaint filed in the correct court house? To file your "Answer" or "Response" take, or send, the "Answer" or "Response" to the Clerk of the Superior Court. STEP 4: Fill out the "Civil Complaint" form. â–« A civil Complaint is a form the Plaintiff files with the court clerk to begin a lawsuit.