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Interrogatories

Interrogatories are written questions that one side in a lawsuit sends to the other side, which must be answered in writing and under oath before trial.

What it actually is

Interrogatories are a formal part of discovery, the process where parties exchange information before trial. They typically ask for facts, the identity of witnesses, and details about claims or defenses, but not for legal arguments or privileged communications. They are usually served early in the case, after initial pleadings are filed.

Why it matters in your case

Interrogatories help you learn the other side’s version of key facts and narrow the issues that need to be proven at trial. If you fail to respond truthfully and completely by the required deadline, the court may impose penalties, such as striking your claims or defenses.

The common misunderstanding

Many people mistakenly think interrogatories are optional or informal requests for information. In fact, they are court-sanctioned discovery tools that require a sworn, written response; ignoring them can have serious legal consequences.

Get the actual rule

Definitions are orientation; rules are authority

This page explains the concept. When it matters to your case, read the rule that governs it in your court — we hold Texas, federal and Washington court rules word for word, and every state's official resources are on the state pages. If someone cites a case at you, check that it exists first.

Related

Terms that travel with this one

General explanation, not legal advice, and not specific to any state — procedures and deadlines vary by jurisdiction and court. If you can get a lawyer or free legal aid, do: every real option.