An Illinois Subpoena to Produce Documents, Information, or Objects or to Permit Inspection of Premises... is a legal order issued by the court requiring an individual or organization to provide certain documents, information, or objects to the court. It may also allow an individual or organization to inspect premises related to the case. This type of subpoena is commonly used in civil and criminal cases in the state of Illinois. There are two types of Illinois Subpoena to Produce Documents, Information, or Objects or to Permit Inspection of Premises...: a Subpoena Ducks Cecum and a Subpoena Ad Testificandum. A Subpoena Ducks Cecum is a court order requiring an individual or organization to produce certain documents or objects for inspection in court. It is typically used to gather evidence for a case. A Subpoena Ad Testificandum is a court order requiring an individual or organization to appear in court and testify about a case. It is typically used to compel an individual or organization to provide information relevant to the case.