Minn. R. Civ. App. P. 129.01 (2026)

(a) Leave Required. Upon prior notice to the parties, a brief of an amicus curiae may be filed with leave of the appellate court. An amicus curiae brief may be filed only by an attorney admitted to practice before the appellate court as provided by Rule 143.05.

(b) Timing of Request. The applicant shall serve and file a request for leave no later than 14 days after the filing of the notice of appeal, the petition which initiates the appeal, the appellate petition for declaratory judgment, or the appellate court order granting review. Any request for leave to participate filed before a pending petition for review is granted under Rule 117 of these rules shall be served and filed not later than 14 days after the filing of any party's petition for review. This 14-day limitation does not apply to a request for leave to participate limited solely to an issue raised in a conditional cross-petition.

(c) Content of Request. A request for leave shall identify whether the applicant's interest is public or private in nature, identify the party supported or indicate whether the amicus brief will suggest affirmance or reversal, and shall state the reason why a brief of an amicus curiae is desirable.

The request shall not exceed 1,500 words, exclusive of the caption, signature block, and any addendum, and shall be accompanied by a certificate of document length.

(Amended effective January 1, 1999; amended effective March 1, 2001; amended effective September 1, 2019; amended effective April 1, 2025.)