A party may serve on any other party no more than 25 written interrogatories, including all discrete subparts. This HowTo Guide addresses drafting and serving interrogatories in a federal case.Practical guide to using interrogatories effectively in federal civil litigation. Includes tips, legal authority, and discovery strategy. (SFD) states its responses and objections to Plaintiff's First Set of Interrogatories Relating to Jurisdictional Discovery. Editor's Note: This Overview covers discovery procedures under the Federal Rules. NCLC's Fair Debt Collection treatises discusses discovery issues that have been addressed in fair debt collection opinions. In this spirit, a party can deliver a request for production after 21 days of service of the complaint and summons. The courts permit a party to consult with his or her attorney when answering interrogatories.