An Illinois Subpoena for Production of Specified Documents, Objects or Tangible Things is a legal document issued by a court in the state of Illinois. It is a written order commanding a person or entity to attend a court hearing and produce certain documents, objects, or tangible things as evidence that may be relevant to a legal case. This type of subpoena can be used in civil, criminal, or administrative proceedings. There are two types of Illinois Subpoena for Production of Specified Documents, Objects or Tangible Things: a Subpoena Ducks Cecum and a Subpoena Ad Testificandum. A Subpoena Ducks Cecum is a court order that requires a person or entity to produce specified documents, objects, or tangible things for inspection or copying. A Subpoena Ad Testificandum is a court order that requires a person or entity to appear in court to testify or present evidence. Both types of subpoenas must be served in accordance with Illinois laws.