Which date starts a petitioner-supporting Supreme Court amicus filing period?

Establish the date the case was placed on the Supreme Court docket.

Check the actual docket for a Court call for response and preserve its date. A respondent voluntarily filing a response is not itself a Court call.

Compare the two identified events and use the later event. Do not assume docketing continues to govern after a later Court call.

Identify whom the brief supports. Respondent, appellee and defendant support follows the time allowed for the opposition or motion to dismiss or affirm.

1. Identify the supported party and stage.
2. Record docketing and any Court call for response.
3. Compare the actual events before applying the thirty-day computation.
4. Establish the separate notice receipt duty or qualifying early filing.
5. File the brief and preserve separate service evidence.

The thirty days run forward from the later Rule 37.2 event, with Rule 30.1 computation. The isolated preset does not collect and compare both events or establish the supported-party branch.

Rule 37.2 expressly forbids extending this filing period. An extension of an opposing party’s brief does not automatically replace the petitioner-supporting later-of trigger.

Rule 30.1 excludes the trigger day and applies its final closed-day rule. That computation cannot select the correct trigger or establish the separate ten-day notice receipt duty.

No single entered date establishes the later event, the supported-party branch and the separate notice duty. This guide explains the procedure without publishing an isolated result.

Other supported party

An amicus supporting respondent, appellee or defendant submits within the time allowed for the brief in opposition or motion to dismiss or affirm. Do not apply this thirty-day branch merely because a petition is pending.

Original action and merits

Rule 37.2 supplies a separate sixty-day original-action plaintiff-supporting period. Rule 37.3 supplies the merits and Special Master exceptions-stage framework.

Advance notice and early filing

Counsel of record for all parties must receive notice at least ten days before the applicable amicus due date, unless the brief is filed earlier than ten days before that due date. Preserve the rule’s narrower wording where the May Clerk guide says at least ten days.

Counsel and useful content

Rule 37.1 requires an attorney admitted under Rule 5 and material useful beyond the parties’ presentations. Filing a brief does not establish permission to argue.

• 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 the supported party and current stage.
• Preserve docketing and any actual Court call for response.
• Check the later event rather than selecting docketing by default.
• Document timely notice receipt or qualifying early filing.
• Check cover, applicable form, required disclosures and separate service.
• File the brief under the applicable Rules 29, 33 and 34 requirements and separately serve the parties. Court electronic submission does not itself serve them. Preserve actual receipt of any required Rule 37.2 advance notice as a different act.