I declare under penalty of perjury that the information in this Certificate of Service is true and correct. Pursuant to Texas Rule of.Appellate Procedure 52.7(c), the record must be served on each party in an original proceeding, including a respondent trial judge. 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. The certification may be signed electronically. Certificate of Service. Rule 197 - Interrogatories to Parties 197.1 Interrogatories. Write the address of the party where you mailed the copy to or where you hand delivered the copy. This Note explains how to draft the case caption, introduction, instructions, definitions, interrogatories, signature block and certificate of service. Learn More About Requesting and Responding to Interrogatories During the Discovery Process in Texas.