Rule 29 Briefs of an amicus curiae.
Rule Text
(a) When permitted. A brief of an amicus curiae may be filed only by leave of court granted on motion, or at the request of the court.
(b) Motion for leave to file. A motion for leave to file an amicus brief shall identify the interest of the applicant and shall state the reasons why the brief of an amicus curiae is desirable. The brief may be conditionally filed with the motion for leave to file.
(c) Contents, Form, and Length. An amicus brief shall conform to the provisions of Rule 28(b). The length of the amicus brief shall be limited to onehalf the length allowed for the principal brief of the party whose position the amicus brief will support, unless a motion for enlargement pursuant to Rule 28(j)(3) is approved by the court.
(d) Time for Filing. Unless otherwise allowed by the court, the brief of an amicus curiae shall be filed within the time allowed the party whose position the amicus brief will support.
(e) Reply brief. Except by the court’s permission, an amicus curiae may not file a reply brief.
(f) Oral argument. An amicus curiae may participate in oral argument only upon motion and leave of court.
[Amended eff. 5-7-2015; Amended 4-16-2026, eff. 6-1-2026.]