Learn more about interrogatories, what to do if you are the responding party, what you can object to, and how much time you have to answer. Learn More About Requesting and Responding to Interrogatories During the Discovery Process in Texas.A Practice Note discussing how to draft and serve interrogatories in a civil case in Texas district or county court. Interrogatories are a list of questions from one Party to the other. Certificate of Service. Fill in all information in this section and sign before sending to the claimant. Any ground not stated in a timely objection is waived unless the court, for good cause, excuses the failure. An application for an order to a deponent who is not a party shall be made to the court in the district where the deposition is being taken. The Texas discovery rules expressly permit contention interrogatories. Service is "the formal delivery of a writ, summons, or other legal process or notice" according to Black's Law Dictionary.