Wisconsin Subpoena to Testify at a Deposition in a Civil Action is a legal document issued by a court in the state of Wisconsin that requires a person to appear in court and testify at a deposition in a civil action. The witness must appear at the designated time and location and answer questions posed by the parties involved in the case. The witness must bring any documents or other evidence related to the case as requested by the subpoena. There are two types of Wisconsin Subpoena to Testify at a Deposition in a Civil Action: a subpoena ad testificandum, which requires the witness to appear and testify; and a subpoena duces tecum, which requires the witness to bring documents or other evidence related to the case. Both types of subpoenas are legally binding and must be obeyed. Failure to comply may result in contempt of court charges.