A Michigan Subpoena to Testify at a Deposition in a Civil Action is a court order issued by a Michigan court requiring a witness to appear and testify under oath during a deposition in a civil action. The deposition is a part of the discovery process in which a party can obtain information from the opposing party in order to prove its claims or defenses. The Michigan Subpoena to Testify at a Deposition in a Civil Action may require the witness to bring documents and other physical evidence to the deposition. There are two types of Michigan Subpoena to Testify at a Deposition in a Civil Action: a subpoena ad testificandum (to testify) and a subpoena duces tecum (to bring documents and physical evidence).