A Subpoena to Testify at a Deposition in a Civil Action is a court-issued document that orders an individual or organization to appear and give testimony in a civil lawsuit. This type of subpoena requires the witness to attend a deposition, which is a formal questioning session where each side of the lawsuit can question the witness about information relevant to the case. Subpoenas to Testify at a Deposition in a Civil Action can be issued by either the plaintiff or the defendant in the case, and must be served to the witness in accordance with the applicable state or federal laws. There are two primary types of Subpoena to Testify at a Deposition in a Civil Action: 1. Subpoena duces tecum: This type of subpoena requires the witness to appear and bring certain documents or other physical evidence relevant to the case. 2. Subpoena ad testificandum: This type of subpoena requires the witness to appear and answer questions about the case, but does not require the witness to bring any physical evidence. If the witness does not comply with the Subpoena to Testify at a Deposition in a Civil Action, they may be held in contempt of court and may be subject to fines and/or jail time.