Form Interrogatories are a list of questions on a court form. This guide contains forms and instructions for propounding Form Interrogatories on your opponent in a California civil case.I am employed in the County of San Mateo, State of California. Generally, Plaintiff contends that the interrogatories request information that cannot be uncovered through forensic data, that the. This HowTo Guide addresses the steps for filing and serving motions in general civil cases in Santa Clara Superior Court. Effective immediately, the following documents will now be accepted electronically for Probate and Mental Hearing Cases.