Interrogatories may, without leave of court, be served upon any party after service of the summons and complaint. Rule 33.01 - Availability (a) Any party may serve written interrogatories upon any other party.Interrogatories are done in a particular format and each party can serve another party with up to 50 interrogatories. Interrogatories. Written questions about things that are relevant, or important, to the case. A party can serve another party with up to 50 interrogatories. A party may serve on any other party no more than 25 written interrogatories, including all discrete subparts. A pro se party can also add themself to the service list in the eFile and eServe system, allowing the court administrator to serve them electronically. Minnesota Rules of Civil Procedure Part V (Rules 2637) covers Depositions and Discovery, Discovery Subpoenas, Evidence and Exhibits. The Court denies Plaintiffs' motion to compel a supplemental response to. Interrogatories 9 and 10.