Rule 54.Discovery Before an Action Is Filed or Pending an Appeal
Part VII. Disclosure and Discovery · Last amended January 1, 2019 · Last verified September 4, 2026
Full Text of Rule 54
Rule History
Added Aug. 30, 2018, effective Jan. 1, 2019.
Plain-English Summary
Rule 54 is the exception to the assumption that discovery follows a pending case. It runs in two directions: before an action exists, and after judgment while an appeal is alive.
Before an action is filed
A person who wants to perpetuate testimony -- including their own -- or preserve evidence files a verified petition in the superior court in the county 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; identify the subject matter and the petitioner's interest; state the facts to be established and why they must be preserved now; name each expected adverse party and address; name each person from whom discovery is sought -- who need not be an expected adverse party -- and the evidence expected; and ask for a specific order.
The hearing, and the timetable
Unless everyone stipulates or the court orders otherwise for good cause, a hearing is required. Each expected adverse party must be served with the petition and a notice of the hearing at least 20 days beforehand, in the same manner as a summons and pleading under Rule 40(f)(1) or Rule 41. An opposition may be filed at least 5 days before the hearing, and unless the court orders otherwise the petitioner may not file a reply.
The order
If satisfied that preserving the evidence may prevent a failure or delay of justice, the court must enter an order identifying who may be subpoenaed and the subject matter, permitting a physical or mental examination, or permitting the petitioner's own deposition. For this rule's purposes, references elsewhere to "the court where an action is pending" mean the court where the petition was filed. A deposition taken this way may be used under Rule 59 in any later Arizona action involving the same subject matter, and subpoena recipients keep their nonparty rights under Rule 52.
Counsel at the petitioner's expense
Subpart (a)(5)(C) is the striking provision. If the court authorizes a deposition and an expected adverse party was not served like a summons and is otherwise unrepresented, the court must appoint an attorney to represent that party and cross-examine the deponent -- and the petitioner pays, in an amount the court fixes. Testimony is not preserved against an absent person without someone there to test it.
Pending appeal
The superior court that rendered judgment may, if an appeal has been taken or may still be taken, permit discovery to preserve evidence for later superior court proceedings in that action. A party moves with the same notice and service as if the case were still pending, identifying each person to be deposed and the expected substance, and showing the reasons for perpetuating it.
Frequently Asked Questions
Can I take a deposition before filing a case?
Rule 54(a) allows it on a verified petition in the superior court in the county where any expected adverse party resides, showing that you expect to be a party but cannot presently bring the action and that preserving the evidence may prevent a failure or delay of justice.
Is a hearing required on the petition?
Yes, unless the petitioner and all expected adverse parties stipulate to the discovery or the court orders otherwise for good cause. Rule 54(a)(2) requires it.
How much notice do expected adverse parties get?
Rule 54(a)(3) requires service of the petition and a notice of the hearing at least 20 days before the hearing date, in the same manner a summons and pleading are served.
Can I file a reply to an opposition?
Not unless the court orders otherwise. Rule 54(a)(4) allows an opposition at least 5 days before the hearing and says the petitioner may not file a reply memorandum.
Who pays for a lawyer appointed for an absent party?
The petitioner. Rule 54(a)(5)(C) requires the court to appoint an attorney to represent an unrepresented expected adverse party who was not served like a summons, and requires the petitioner to pay for those services in an amount the court fixes.
Can discovery happen while a case is on appeal?
Rule 54(b) allows the superior court that rendered judgment to permit discovery to preserve evidence for use in later superior court proceedings in that action, if an appeal has been taken or may still be taken.