A party may serve on any other party no more than 25 written interrogatories, including all discrete subparts. The amended rule provides that discovery materials and disclosures under Rule 26(a)(1) and (a)(2) must not be filed until they are "used in the proceeding.Form Interrogatories are a list of questions on a court form. In federal civil litigation, interrogatories are written questions that must be answered in writing under oath. (Regency Health Services v. Superior Court (1998) 64 Cal.App.4th. This disclaimer sets out the limit of services from selfhelp program and court staff. Intheblanks form authorizing an individual filing agent to efile documents on behalf of a single attorney.