A party must disclose to the other parties the information, documents and witnesses that support the party's claims and defenses. Any party may serve written interrogatories upon any other party, subject to the limits of Rule 26(c)(5).Discovery requests (interrogatories, requests for production, or requests for admission) and responses are not filed with the court at the time they are served. The division need not file any document to which the interrogatories relate until the interrogatories are answered as provided in this section. (e) (i) The division need not file any document to which the interrogatories relate until the interrogatories are answered as provided in this section. Interrogatories must be served on the party from whom responses are sought and all other parties who have appeared in the action. Rule 5 - Service and Filing of Pleadings and Other documents (a) When service is required. (1) Documents that must be served. Edit, sign, and share Discovery Interrogatories from Defendant to Plaintiff with Production Requests - Utah online. (g). Does this Defendant have an agent for service in the State of Michigan?