(g). Does this Defendant have an agent for service in the State of Michigan? If so, state the name and address of the registered agent.Interrogatories occur during the discovery process of a lawsuit. Michigan Legal Help has tools to fill many kinds of forms but we do not cover all areas. You may have a blank form that you need to fill out on your own. If personally served, responses to interrogatories are due within thirty (30) days of service. Lawyers, take note: On June 19, 2019, the Michigan Supreme Court amended the court rules covering discovery in civil cases. In Michigan, parties are allowed to serve written questions on the opposing parties called Interrogatories.