When must all parties receive notice of a Supreme Court amicus brief?

Identify the particular Rule 37.2 filing branch and establish its correct due date.

Preserve any actual early brief filing and compare it with the rule’s earlier-than-ten-days wording.

Identify counsel of record for every party and preserve actual notice receipt.

For a joint brief, one signatory must timely notify all parties. The brief must indicate timely counsel receipt and its cover must identify the supported party.

1. Identify the applicable Rule 37.2 branch.
2. Establish the brief’s correct due date.
3. Check any actual qualifying early filing.
4. Arrange actual receipt by all counsel with the required interval.
5. Record receipt and the required statement in the brief.

The rule requires a minimum ten-day interval before the established brief due date. A backward date alone does not prove the correct due date, actual receipt or the early-filing exception.

The rule excuses notice when the brief is filed earlier than ten days before the due date. The May 2026 Clerk guide says at least ten days. Filing exactly ten days early is not clearly within the rule’s narrower wording; do not assume notice is excused.

Rule 30.1 does not expressly prescribe backward closed-day computation. Do not move notice later in a way that reduces the required interval. Arrange sufficiently early actual receipt and check case-specific directions.

No isolated backward result establishes all counsel receipt, stage or the early-filing exception. This guide does not invent closed-day treatment or label dispatch as receipt.

Qualifying early filing

Rule 37.2 uses earlier than ten days before the due date. The Clerk guide’s at-least-ten-days wording is broader. Do not rely on exactly ten days early as clearly excusing notice.

Merits and Special Master exceptions

Rule 37.3 expressly removes the Rule 37.2 ten-day notice requirement for amicus briefs before oral argument or on exceptions to a Special Master’s report.

Rule 22 applications

Rule 37.4 expressly makes Rule 37.2’s ten-day notice requirement inapplicable to amicus briefs connected with Rule 22 applications. It requires prompt filing and electronic transmission to the parties under Rule 29.3 at filing.

Joint amicus brief

Only one signatory must timely notify all parties for a jointly filed brief. That does not dispense with receipt by counsel of record for every party.

• This source guide does not infer triggering facts, an extension or the effect of a particular direction.
• It provides no computed date or paid calculation record.

• Confirm that Rule 37.2 governs this stage.
• Establish the actual brief due date under the supported-party branch.
• Use the exact early-filing wording before treating notice as excused.
• Ensure every party’s counsel receives timely notice.
• Preserve receipt evidence and the required notice statement and supported-party cover.
• The required act is receipt by counsel of record for all parties. A sent email, mailing or Court electronic submission alone does not prove every required recipient received notice. Preserve receipt evidence separately from the brief’s filing and Rule 29 service.