Interrogatories may, without leave of court, be served upon the plaintiff after commencement of the action and upon any other party with or after the service of the citation and petition upon that party.

When can you send interrogatories?

The federal rules require that a party must respond to interrogatories within 30 days. Most states follow the 30-day rule as well. The federal rules, as well as state rules, require that the person answering the interrogatories sign and make an oath affirming the truthfulness of the answers.

When can you serve discovery?

Once the time passes, plaintiff is entitled to serve discovery without any procedural hurdles. However, in a federal court action, a party may not serve discovery until after the meeting of counsel under Federal Rule of Civil Procedure 26. This meeting is typically initiated by plaintiff's counsel.