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United States · Supreme Court

When must I file a conditional cross-appeal jurisdictional statement?

Supreme Court Rule 18.4 requires an appellee seeking an otherwise untimely conditional cross-appeal to file a compliant jurisdictional statement no more than 30 days after the original case is placed on the Supreme Court docket. The cross-appeal filing time will not be extended.

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Period
30 calendar days
Trigger
Original appeal placed on the Supreme Court docket
Rule
Supreme Court Rule 18.4
Rules of the Supreme Court of the United States

Adopted February 17, 2026, effective March 16, 2026

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Which event starts this period?

Verify when the original appeal was placed on the Supreme Court docket.

Confirm that an appellee seeks the Rule 18.4 conditional cross-appeal that otherwise would be untimely.

Prepare a jurisdictional statement complying with Rule 18.3, including its copy requirements. Material already in the opening statement’s appendix need not be reproduced again.

Mark the cover as a conditional cross-appeal and keep the statement separate from another pleading, except the attached pauper motion.

Supreme Court Rule 18.4

How are the 30 days counted?

  1. Use original-case Supreme Court docketing, not the district-court judgment, notice filing or statement service date.
  2. Exclude the established trigger day.
  3. Count 30 calendar days.
  4. Apply Rule 30.1 final-day adjustment.
  5. Complete the required filing by that date.

Supreme Court Rule 30.1 excludes the trigger day and includes every intermediate calendar day. For periods shorter than seven days it excludes intermediate closed days. Each fixed period reviewed here is at least seven days.

Rule 18.4 expressly prohibits extension of the cross-appeal filing time. Do not import Rule 18.3’s discretionary statement-extension ceiling into this procedure.

If the final day is Saturday, Sunday, a federal legal holiday listed in 5 U.S.C. 6103 or a Court-building closure ordered by the Court or Chief Justice, Rule 30.1 continues the period to the next day that is none of those. Check actual Court closure orders. The calculator does not infer additional closures.

Supreme Court Rule 30

What does an ordinary calculation look like?

Fictitious example

Fictitious original-appeal Supreme Court docketing on August 24, 2026. An appellee seeks an otherwise untimely conditional cross-appeal. Exclude the established trigger day, August 24, 2026. Counting 30 calendar days reaches September 23, 2026. The final day is an open weekday.

Example counting steps
StepWhat is countedDate
TriggerOriginal appeal placed on the Supreme Court docketAugust 24, 2026
Count30 calendar daysSeptember 23, 2026
Example resultWednesday, September 23, 2026

Fictitious facts and dates. No different schedule, additional Court closure or extension is assumed.

Try these dates in the calculator

Which qualifications can change the procedure?

Required statement and service
The conditional cross-appeal statement must comply in all respects, including copy count, with Rule 18.3 and include Rule 29 proof of service.
Fee or pauper motion
Pay the Rule 38 docket fee or submit the applicable in-forma-pauperis motion. The cover must clearly identify the conditional cross-appeal.
Separate pleading
Rule 18.4 prohibits joining the cross-appeal with another pleading except the attached in-forma-pauperis motion.
Prompt cross-appellee notice
After docketing, promptly notify all cross-appellees on the Clerk’s form of filing, docketing and docket number. Serve the notice under Rule 29.
Supreme Court Rule 18.4
  • The calculator counts the encoded default period after an established trigger. It does not determine jurisdiction, party alignment or the effect of a particular order.
  • Check the Court’s docket, actual directions and proof of the required act.

What should I check before completing the required act?

Common questions

The specific procedure

Do these thirty days start when the notice of appeal is filed below?

No. Rule 18.4 uses Supreme Court docketing of the original case. District-court notice filing starts the initial appellant’s different Rule 18.3 statement period.

Supreme Court Rule 18.4

Can a Justice extend the conditional cross-appeal time?

Rule 18.4 expressly states that the time to file a cross-appeal will not be extended.

Supreme Court Rule 18.4

Can I join the cross-appeal with another pleading?

Rule 18.4 prohibits that combination except an attached motion for leave to proceed in forma pauperis.

Supreme Court Rule 18.4

Computation and service

Which closed days does the Supreme Court count?

Rule 30.1 uses Saturdays, Sundays, federal legal holidays listed in 5 U.S.C. 6103 and a Court-building closure ordered by the Court or Chief Justice. It does not import every state or DC holiday. Check actual Court closure orders.

Supreme Court Rule 30

Does electronic Court filing complete the required service?

No. Rule 29.7 expressly says submission to the Court’s electronic system does not itself transmit the document to other parties. The March 2026 guidelines also distinguish automatic case notifications from formal service.

Supreme Court Rule 29.7

Official sources and scope

Provisions used (9)
Provisions used in this guide
ProvisionPurpose
Supreme Court Rule 18.4This procedure’s actor, trigger, period and required act
Supreme Court Rule 18.3The identified related procedural qualification
Supreme Court Rule 18.1–2The identified related procedural qualification
Supreme Court Rule 30.1The identified related procedural qualification
Supreme Court Rule 30Computation, closures and authorized extension procedure
Supreme Court Rule 29.1–3The identified related procedural qualification
Supreme Court Rule 29.2–3The identified related procedural qualification
Supreme Court Rule 29.7The identified related procedural qualification
Electronic Filing Guidelines, March 2026Current electronic requirements, exceptions and separate service
Read the current Supreme Court rules

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