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Intervention in the Federal Courts of Appeals

Tim Reagan, Kristin A. Garri
July 14, 2025

Prepared for the Advisory Committee on the Federal Rules of Appellate Procedure, this report examines motions to intervene on appeal. Intervention at the beginning of a case is studied in a two-year filing cohort, and intervention at the end of a case, such as after argument or judgment, is examined in a four-year termination cohort.

PDF icon Intervention in the Federal Courts of Appeals 74 pages

Tags:
Appeals | Appellate Filings | Motions | Federal Rules of Practice and Procedure | Federal Rules of Appellate Procedure | Fed. R. App. P. 32 | Fed. R. App. P. 15 | Fed. R. App. P. 26.1 | Fed. R. App. P. 28.1