Rule 29 of the Federal Rules of Appellate Procedure govern the filing of amicus briefs before appellate courts, with possible modification by the local rules of each court. Rule 29 itself imposes a deadline for filing an amicus brief "no later than 7 days after the principal brief of the party being supported is filed." Local rules impose stricter rules, however. In the [[D.C. Circuit]], for example, notice of intent to file an amicus brief must be filed soon after the case is docketed on appeal, which is long before the deadline for the principal brief. | Rule 29 of the Federal Rules of Appellate Procedure govern the filing of amicus briefs before appellate courts, with possible modification by the local rules of each court. Rule 29 itself imposes a deadline for filing an amicus brief "no later than 7 days after the principal brief of the party being supported is filed." Local rules impose stricter rules, however. In the [[D.C. Circuit]], for example, notice of intent to file an amicus brief must be filed soon after the case is docketed on appeal, which is long before the deadline for the principal brief. |