Colo. R. App. P. 52 (2026)

(a) Petition for Rehearing Optional. Filing a petition for rehearing in the intermediate appellate court before seeking certiorari review in the supreme court is optional.

(b) Time to File.

(1) In General. Except as provided in subsections (2), (3), and (4) of this rule, a petition for writ of certiorari must be filed within 42 days after entry of the final judgment on appeal, whether by opinion or disposition by order, if no petition for rehearing is filed. If a petition for rehearing is filed, the petition for writ of certiorari must be filed within 28 days after the intermediate appellate court's denial of the petition for rehearing or within 28 days after the intermediate court issues a new or modified opinion after granting the petition for rehearing. No certiorari proceeding may be initiated in the supreme court until the time for filing a petition for rehearing in the intermediate appellate court has expired. A timely filed petition for writ of certiorari or a timely filed motion for extension of time to file a petition for writ of certiorari transfers jurisdiction from the intermediate appellate court to the supreme court.

(2) In Workers’ Compensation and Unemployment Insurance Cases. A petition for writ of certiorari to review a judgment of the court of appeals in workers’ compensation and unemployment insurance cases must be filed in the supreme court within 28 days after the issuance of the court of appeals opinion if no petition for rehearing is filed, or within 14 days after the denial of a petition for rehearing by the court of appeals.

(3) In Dependency or Neglect Cases. A petition for writ of certiorari to review a judgment of the court of appeals in dependency or neglect cases must be filed within 28 days after issuance of the court of appeals opinion if no petition for rehearing is filed, or within 14 days after the denial of a petition for rehearing by the court of appeals.

(4) In Mental Health Proceedings. A petition for writ of certiorari to review a judgment of the court of appeals in mental health proceedings pursuant to C.A.R. 3.5 must be filed within 28 days after the issuance of the court of appeals opinion if no petition for rehearing is filed or 14 days after the denial of a petition for rehearing by the court of appeals.

Source: (b) amended June 4, 1987, effective January 1, 1988; (a) amended and effective May 17, 1990; (b) amended July 11, 1991, effective July 1, 1991; (b) amended and adopted November 20, 1998, effective January 1, 1999; (b)(3) amended and effective February 7, 2008; (b)(3) amended and effective May 28, 2009; (a) and (b)(3) amended and adopted December 14, 2011, effective January 1, 2012, for all cases pending on or filed on or after January 1, 2012, pursuant to C.R.C.P. 1(b); entire rule amended and effective June 7, 2018, effective July 1, 2018; (b)(1) corrected and effective June 7, 2019; (b)(1) amended February 24, 2022, effective July 1, 2022 (Rule Change 2022(05)).

Amended by Rule Change 2025(02), adopted January 9, 2025, effective immediately.

Amended by Rule Change 2025(11), adopted May 22, 2025, effective July 1, 2025.

Amended by Rule Change 2026(05), adopted March 26, 2026, effective immediately.