Interrogatories are written questions to the other party or parties in a lawsuit whose purpose is to get information that can be used at trial. In cases not subject to Uniform Interrogatory requirements, interrogatories must be answered sixty (60) days after being served.Various forms that may be required or may be used in more than one Probate and Family Court case type. This packet provides general guidance about asking written questions, called "Interrogatories," to another party in the case. (b)Service of Answers; Time; Enlargement of Time. If you have a question that isn't answered, please complete the Contact Us form to have your question answered. Frequently Asked Questions. Joint appendix of exhibits, index and certificates regarding service of exhibits on parties as set out in Rule 9A(b)(vi); and. You should print this for your records in the event the judge asks for confirmation of service to your adversaries. It can be used in civil lawsuits in the Northern District Court of California.