Form Interrogatories are a list of questions on a court form. This packet provides general guidance about asking written questions to another party in the case.This packet provides general guidance about asking written questions, called "Interrogatories," to another party in the case. It helps if you fill in the top part of the form with the case and court information. I am employed in the County of San Mateo, State of California. Interrogatories are a collection of written questions you can send to the opposing party in a lawsuit. We offer routine, rush and same day service of process in San Jose! Our San Jose process servers serve court cases for large and small law firms. It's not entirely clear from your inquiry whether you are in state court, rather than a federal district court in the Bay Area (i.e. Bay Area Legal Services-West: 727-490-4040.