Okla. Stat. tit. 12, Rule 1.191
(a) Style, Commencement, and Costs.
Original proceedings in the Supreme Court shall be styled as shown in Rule 1.301, Form No. 13.
Original jurisdiction proceedings shall be commenced by filing with the clerk thereof an application to assume original jurisdiction and a petition (such as a petition for mandamus, prohibition or habeas corpus) and a brief in support of the application and petition. An entry of appearance shall be filed with the application and petition.
The cost deposit provided by statute shall be remitted to the Clerk of the Supreme Court, or if the petitioner is an indigent, an affidavit in forma pauperis shall be filed concurrently with the application to assume original jurisdiction and petition. 20 O.S. § 15. See Rule 1.301, Form No. 4.
(b) Application and Petition.
The application and petition shall be combined in the same instrument and shall not exceed fifteen (15) pages, 8 1/2" x 11" double spaced, 12-point font. The application and petition shall state concisely:
(c) Copies and Brief.
One original and fourteen (14) legible copies of the application, petition and brief shall be filed. The brief may not exceed fifteen (15) pages, 8 1/2" x 11" double spaced typed. The brief shall comply with Rule 1.11. No appendix or exhibits may be attached to the brief. If a response is filed by the respondent the petitioner shall not file a reply brief without leave of Court. Failure to observe this rule may result in summary dismissal of the action.
(1) A separate appendix may be submitted with the brief. Only one appendix, and one copy, shall be filed. The appendix may contain only:
(3) The appendix shall be securely bound on the left side and shall include an index of its contents. For each exhibit or item of the trial court record contained therein, the index shall contain the following information:
(e) Notice Hearing and Response Dates.
No application, except for habeas corpus, will be heard without notice to the adverse party or parties unless by reason of an emergency this Court determines the same should be heard without notice. Notice shall be given by serving the combined application and petition, brief in support, and any appendix in the manner provided in 12 O.S. § 2005(B), or as provided in the Rules for Electronic Filing in the Oklahoma Courts. Proof of service shall be by a certificate of service endorsed on the filing. All respondents, parties, and real parties in interest are entitled to notice.
Hearing and response dates shall be set by order of the Chief Justice. The order setting hearing and response dates shall be mailed by the Clerk of the Supreme Court. All petitioners, respondents, parties, and real parties in interest are entitled to notice. The Court (by a Referee or Justice) may require different or additional service of notice.
(f) Response.
The Court may refuse to assume original jurisdiction without a response being filed. The date of any response shall be set by order of the Chief Justice. The allowed response may not exceed fifteen (15) pages, 8 1/2" x 11" double spaced typed. A response in the nature of a brief shall comply with Rules 1.10, 1.11 as to form and content, but shall not exceed the page limitation of fifteen pages. No appendix or exhibits may be attached to the response.
If a response is ordered one original and fourteen (14) legible copies shall be filed. If a response is ordered the respondent may file an appendix conforming to Rule 1.191(d). An entry of appearance shall be filed with the response. Service of the response shall be made in accordance with Rule 1.4(g), unless a Referee or Justice of the Court require a different procedure. Failure to observe this rule may result in striking the response.
(g) Oral Argument.
Oral argument before the Supreme Court, an assigned Justice or a Referee, is not a matter of right. The Court may refuse to assume original jurisdiction without hearing oral presentation.
(h) Amicus Curiae.
Amicus curiae may not appear in an original jurisdiction proceeding unless an order of the Court grants leave for the appearance. Amicus curiae practice and procedure in an original jurisdiction proceeding will be governed by Court orders in that proceeding. Rule 1.12 shall apply.
(i) Commencement At Least Ten Days Before Hearing or Trial; Emergency Relief
This Court will not assume original jurisdiction in any matter except habeas corpus unless the same is filed with the clerk of this Court at least ten (10) days prior to the date said cause is set for hearing or trial. Provided however, the above limitation may be excused by this Court if petitioner alleges and shows that asserted grounds for relief were not known, or could not reasonably have been discovered, prior to the ten-day period.
An application that requires the Court to act in less than thirty (30) days in order to effect the relief requested shall be plainly marked with the word "emergency" on the face of the application or petition. A request for stay in an original proceeding must be made by separate motion and is governed by Rule 1.15(c).
(j) Sanctions.
Sanctions for the filing of a frivolous application to invoke this Court's extraordinary powers to issue original jurisdiction writs may be invoked against the party filing such proceeding in favor of the party required to defend against it (including a real party in interest). Sanctions may include an award of costs and attorney's fees.
A frivolous proceeding may include one brought for the sole purpose of delay or to disrupt the proceeding in the court below or a proceeding so obviously without any merit as to impute bad faith on the party bringing the action. Where the filing of such proceeding is in good faith, sanctions will not be imposed. See 12 O.S. § 995.
Adopted by order of the Supreme Court, eff. January 1, 1997. Amended by order of the Supreme Court, 2013 OK 67, eff. August 1, 2013. (superseded document available); Amended by order of the Supreme Court, 2026 OK 23, eff. April 14, 2026. (superseded document available)