(d)Answers and Objections. The responding party must serve its answers and any objections within 30 days after being served with the interrogatories.Discovery objections cheat sheet for common interrogatories and other discovery objections. How to object to improper discovery requests. Be sure to sign your responses. Fill in the "certificate of service" on the last page before mailing them back to the other side. You must answer interrogatories within 30 days from service. If not, you will be forced to answer and probably end up paying HIS attorney fees. A certificate of service of the interrogatories must be filed, giving the date of service and the name of the party to whom they were directed. A sample notice of serving interrogatories used to prove service of interrogatories in a Florida circuit court civil case.