Illinois Summons For Discovery is a type of court document used in the state of Illinois. It is usually filed by a Plaintiff in a civil lawsuit to legally request information from a Defendant. The Summons is designed to compel the Defendant to provide answers to written questions, to provide documents, to appear for deposition and/or for a physical or mental examination. There are three types of Illinois Summons For Discovery: a Notice to Produce Document or Things, an interrogatory, and a Request for Admission. A Notice to Produce Document or Things requires the Defendant to produce certain documents or tangible items listed in the Summons which may be relevant to the case. Interrogatories are written questions the Defendant is required to answer under oath. A Request for Admission requires the Defendant to admit or deny certain statements of fact.