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Rule 410.Depositions to Perpetuate Testimony

Part IV. Disclosure, Discovery, and Subpoena · Last amended July 1, 2021 · Last verified September 4, 2026

In one sentenceRule 410 allows a verified petition to depose a witness before an action is filed, or while an appeal is pending, to perpetuate testimony.

Full Text of Rule 410

Text sizeJump to: (a) (b) (c)

(a) Before an Action is Filed.
(1) Petition. A person who wants to perpetuate testimony about any matter within the jurisdiction of any court in the state of Idaho may file a verified petition in the district court for the district where any expected adverse party resides. The petition must ask for an order authorizing the petitioner to depose the named person in order to perpetuate their testimony. The petition must be titled in the petitioner's name and must show:
(A) that the petitioner expects to be a party to an action within the jurisdiction of a court of the state of Idaho but cannot presently bring it or cause it to be brought;
(B) the subject matter of the expected action and the petitioner's interest;
(C) the facts that the petitioner wants to establish by the proposed testimony and the reasons to perpetuate it;
(D) the names or a description of the persons whom the petitioner expects to be adverse parties and their addresses, so far as known; and
(E) the name, address, and expected substance of the testimony of each deponent.
(2) Notice and Service; Appointment of Attorney. At least 21 days before the hearing date, the petitioner must serve each expected adverse party with a copy of the petition and a notice stating the time and place of the hearing. The notice may be served either inside or outside the county or state in the manner provided in Rule 204. If that service cannot be made with reasonable diligence on an expected adverse party, the court may order service by publication or otherwise. The court must appoint an attorney to represent persons not served in the manner provided in Rule 204 and to cross-examine the deponent if an unserved person is not otherwise represented. If any expected adverse party is a minor or is incompetent, Rule 112(c) applies.
(3) Order and Examination. If satisfied that perpetuating the testimony may prevent a failure or delay of justice, the court must issue an order that designates or describes the persons whose depositions may be taken, specifies the subject matter of the examinations, and states whether the depositions will be taken orally or by written interrogatories. The depositions may then be taken under these rules, and the court may issue orders like those authorized by Rules 406 and 416. A reference in these rules to the court where an action is pending means, for purposes of this rule, the court where the petition for the deposition was filed.
(4) Using the Deposition. A deposition to perpetuate testimony may be used under I.R.C.P. Rule 32(a) in any later-filed district-court action involving the same subject matter if the deposition either was taken under these rules or, although not so taken, would be admissible in evidence in the courts of the state where it was taken.
(b) Pending Appeal.
(1) In General. The court where a judgment has been rendered may, if an appeal has been taken or may still be taken, permit a party to depose witnesses to perpetuate their testimony for use in the event of further proceedings in that court.
(2) Motion. The party who wants to perpetuate testimony may move for leave to take the depositions, on the same notice and service as if the action were pending in the district court. The motion must show:
(A) the name, address, and expected substance of the testimony of each deponent; and
(B) the reasons for perpetuating the testimony.
(3) Court Order. If the court finds that perpetuating the testimony may prevent a failure or delay of justice, the court may permit the depositions to be taken and may issue orders like those authorized by Rules 406 and 416. The depositions may be taken and used as any other deposition taken in a pending district court action.
(c) Perpetuation by an Action. This rule does not limit a court's power to entertain an action to perpetuate testimony.
End

Rule History

(Adopted March 29, 2021, effective July 1, 2021.)

Plain-English Summary

Rule 410 is the exception to the assumption that discovery follows a pending case.

Before an action is filed

A person wanting to perpetuate testimony about any matter within an Idaho court's jurisdiction files a verified petition in the district court for the district where any expected adverse party resides, titled in the petitioner's own name. It must show that the petitioner expects to be a party but cannot presently bring the action; the subject matter and the petitioner's interest; the facts to be established and the reasons to perpetuate them; the expected adverse parties and their addresses so far as known; and the name, address and expected substance of the testimony of each deponent.

Notice, and counsel for the absent

At least 21 days before the hearing, each expected adverse party must be served with the petition and a notice of time and place, inside or outside the county or state, in the manner of Rule 204. If that cannot be done with reasonable diligence, the court may order service by publication or otherwise.

Then the provision that makes the procedure fair: the court must appoint an attorney to represent persons not served in the Rule 204 manner and to cross-examine the deponent, if an unserved person is not otherwise represented. Testimony is not preserved against someone absent without a lawyer there to test it.

The order

If satisfied that perpetuating the testimony may prevent a failure or delay of justice, the court must issue an order designating the persons to be deposed, specifying the subject matter, and stating whether the depositions are oral or by written interrogatories. It may also issue orders like those under Rules 406 and 416. For this rule's purposes, references to "the court where an action is pending" mean the court where the petition was filed.

Using it later

A deposition to perpetuate testimony may be used under I.R.C.P. Rule 32(a) in any later-filed district-court action involving the same subject matter — if it was taken under these rules or would be admissible in the courts of the state where taken.

Pending appeal

The court that rendered judgment may, if an appeal has been taken or may still be taken, permit depositions to perpetuate testimony for use in further proceedings in that court. The motion, on the same notice and service as if the action were pending, must show each deponent's name, address and expected substance, and the reasons for perpetuating. The rule closes by confirming that it does not limit the court's power to entertain an action to perpetuate testimony.

Frequently Asked Questions

Can I take a deposition before filing a case?

Rule 410(a)(1) allows a verified petition in the district court for the district where any expected adverse party resides, showing that the petitioner expects to be a party but cannot presently bring the action and the reasons to perpetuate the testimony.

How much notice do expected adverse parties get?

Rule 410(a)(2) requires service of the petition and a notice of the time and place at least 21 days before the hearing date, in the manner provided in Rule 204.

What if someone cannot be served?

Rule 410(a)(2) allows the court to order service by publication or otherwise, and requires the court to appoint an attorney to represent persons not served in the Rule 204 manner and to cross-examine the deponent if the unserved person is not otherwise represented.

What must the court find before allowing it?

Rule 410(a)(3) requires the court to be satisfied that perpetuating the testimony may prevent a failure or delay of justice, and then to issue an order designating the deponents, the subject matter, and whether the depositions are oral or by written interrogatories.

Can the deposition be used in the later case?

Rule 410(a)(4) allows use under I.R.C.P. Rule 32(a) in any later-filed district-court action involving the same subject matter, if the deposition was taken under these rules or would be admissible in the courts of the state where it was taken.

Can testimony be preserved while a case is on appeal?

Rule 410(b) allows the court where judgment was rendered, if an appeal has been taken or may still be taken, to permit depositions to perpetuate testimony for use in further proceedings in that court.

Source & verification. Rule text and Rule History reproduced verbatim from the Idaho Rules of Family Law Procedure as published by the Idaho Supreme Court, current through amendments effective July 1, 2026. Promulgated by the Supreme Court of Idaho (Idaho Const. art. V, sec. 25). Last verified September 4, 2026. · Official text
Also known as: perpetuate testimonypre-suit depositionbefore an action is filedpending appealverified petition21 days