The subpoena ad testificandum, which is the most common type of subpoena, is a summons to appear in court to serve as a witness. Also known as an ordinary subpoena, this legal writ of court ...

A technical and descriptive term for an “ordinary” subpoena (that is one in which a person’s testimony is sought) is sometimes referred to as a “subpoena ad testificandum” which is more of a mouthful ...

An important fact is whether the subpoena is for documents (duces tecum) or for personal testimony (ad testificandum). The subpoena for documents will give some indication of the subject under ...