Fourth and Ninth Circuits Expand Coinbase Decision

If you practice civil litigation long enough, you learn two eternal truths:
(1) someone will always file something at 11:59 p.m., and (2) jurisdiction is a jealous creature.
It doesn’t like sharing, and it really doesn’t like being surprised.
Enter the U.S. Supreme Court’s 2023 decision in Coinbase, Inc. v. Bielskia case that looked,
at first glance, like it was “just” about arbitration stays… until litigants started using it like a
Swiss Army knife for other kinds of interlocutory appeals.

In the years since, the Fourth and Ninth Circuits have found themselves at the center of a bigger question:
when an appellate court is deciding whether a case should proceed in federal court at all, should the district court
be forced to freeze key steps that could make the appeal meaningless? The answer depends on where you are,
what you’re appealing, and whether the clerk has already walked your remand order to the mailbox.
Yes, really.

This article breaks down what the “Coinbase decision” actually held, why the Fourth and Ninth Circuits became
the starring characters in the sequel, and what it all means for real-world litigation strategyespecially in
removal/remand fights where timing can be everything.

What the Coinbase Decision Actually Did (and Why Everyone Noticed)

Start with the core holding. In Coinbase, Inc. v. Bielski (2023), the Supreme Court addressed what happens
after a district court denies a motion to compel arbitration and the losing party takes an interlocutory appeal
(an appeal that happens mid-case, before final judgment). The Court held that the district court must stay its
proceedings while that arbitration appeal is pending.

Why? The Court leaned on a long-standing jurisdictional principle (often traced to Griggs) that once a notice of appeal
is filed, the district court is divested of control over the aspects of the case involved in the appeal.
In an arbitration appeal, the “aspect” can be hugebecause the appellate court is deciding whether the dispute belongs
in court at all, or should be sent to arbitration. If the district court keeps pushing the case forward,
much of the “benefit” of arbitration (speed, cost, avoiding discovery battles) could be irretrievably lost.

That’s the logic that made Coinbase feel bigger than arbitration. The decision didn’t just tell trial courts,
“hit pause.” It framed the pause as a default jurisdictional consequence of an appeal when the appeal asks:
does this case get to continue here?

Key takeaway from Coinbase

• If an interlocutory appeal places the district court’s authority to proceed in question, the district court
  generally can’t keep acting as if nothing happened.
• The “stay” in Coinbase wasn’t a discretionary balancing test. It functioned like an automatic stop sign for the
  covered proceedings.

From Arbitration to Remand: The “Mailbox Problem” No One Expected

Now pivot to removal and remandwhere a defendant moves a case from state court to federal court.
If the federal court decides removal was improper, it remands the case back to state court.
In many situations, remand orders can’t be appealed at all. But there are key exceptions,
including federal officer removal (and a few others).

Here’s where procedure turns into a footrace. A remand order isn’t always “effective” the instant it’s entered.
Under the federal statute governing remand mechanics, the state court may proceed after the federal clerk mails
(or transmits) a certified copy of the remand order. In other words, there’s sometimes a small but meaningful window:
the order exists, but jurisdiction hasn’t fully snapped back to state court yet.

Litigants asked: if an interlocutory appeal is permitted from the remand order, does filing the notice of appeal
automatically freeze the district court from sending the order backbecause that act would effectively end federal jurisdiction
and risk turning the appeal into a useless academic exercise?

Welcome to the “Coinbase expansion” debate.

The Fourth Circuit’s Move: Coinbase Beyond Arbitration

In City of Martinsville, Virginia v. Express Scripts, Inc. (decided February 10, 2025), the Fourth Circuit confronted that exact scenario.
The defendants removed a case to federal court under the federal officer removal statute. The district court remanded it.
Before the clerk transmitted the remand order back to state court, the defendants filed a notice of appealan appeal permitted by statute in that context.
They also sought a stay.

The Fourth Circuit read Coinbase’s logic as broader than arbitration. It concluded that the notice of appeal triggered the same jurisdictional “divestiture” principle:
when the appeal concerns whether the case can proceed in federal court, the district court must halt actions tied to that question.
For remand orders, the critical action was the clerical step that transfers the case back to state court.

In plain English: the Fourth Circuit treated the mailing/transmittal of the remand order as something the district court was not authorized to do
once the appeal was filed, because that step would collide with the appellate court’s control over the remand question.

Why Martinsville mattered

• It extended Coinbase’s “automatic stay” style reasoning into the removal/remand arenaspecifically for appeals of certain remand orders.
• It turned timing into substance: filing the appeal before the remand is transmitted can preserve federal jurisdiction during the appeal.
• It framed the issue as more than convenienceit was about avoiding “two courts cooking in the same kitchen” at once.

To be clear, the Fourth Circuit didn’t say every interlocutory appeal everywhere freezes everything forever.
It tied the stay concept to the “aspects of the case involved in the appeal,” and emphasized that the appeal was about whether the federal court could proceed at all.
But as a practical matter, the decision gave defendants a powerful play: appeal quickly, and stop the remand machinery mid-motion.

The Ninth Circuit’s Response: Coinbase Isn’t a Universal Remote

The Ninth Circuit addressed the same question in litigation involving similar players and a similar removal context.
In People of the State of California v. Express Scripts, Inc. (published order June 2, 2025, with later proceedings following),
the defendants argued that Coinbase should automatically stay remand proceedings pending their appeal.

The Ninth Circuit declined to extend Coinbase in that setting. Instead, it treated the request as a traditional stay question
governed by the familiar four-factor framework from Nken v. Holder (likelihood of success, irreparable harm, balance of equities, public interest).
In other words, the Ninth Circuit kept the stay decision in the realm of discretion, not automatic jurisdictional shutdown.

The practical difference is significant. Under the Ninth Circuit’s approach, a party appealing a remand order generally can’t assume the case freezes by default.
They may need to move quickly, present strong stay factors, and overcome the uphill reality that the district court already decided the remand issue against them.

And yesthis is where the “Coinbase expansion” storyline gets spicy: the Ninth Circuit’s approach put it in direct tension with the Fourth Circuit’s.
That conflict became explicit enough that parties sought Supreme Court review.

The Circuit Split (and the Supreme Court’s “Not Today” Moment)

When circuits disagree on a recurring federal procedure question, Supreme Court review often becomes the endgameespecially when the dispute affects
jurisdiction and the timing of litigation in high-stakes cases.

That happened here. Parties petitioned for Supreme Court review in a case styled Express Scripts v. California (Docket No. 25-327),
asking whether a remand order appealed under the federal officer removal appeal provision should be subject to an automatic stay pending appeal,
similar to the stay rule applied in Coinbase.

The Supreme Court denied certiorari on January 12, 2026. That denial does not necessarily mean the Court endorses either side;
it simply means thatfor nowthe procedural map remains circuit-dependent.
In other words: the split survives, and litigants must keep playing by local rules.

What the denial means in practice

• The Fourth Circuit’s approach remains a major tool for appellants trying to prevent remand from taking effect while an appeal is pending.
• The Ninth Circuit’s approach continues to require a discretionary stay showing under Nken, not an assumed “Coinbase freeze.”
• The broader litigation world is still watching for the next case that tees up the issue in an even cleaner posture.

Why This Matters Outside These Two Circuits

Even if you don’t litigate in the Fourth or Ninth Circuit every day, these decisions matter because they illustrate a larger post-Coinbase question:
how portable is Coinbase’s reasoning?

Coinbase relied on the idea that some appeals inherently question the district court’s authority to proceed.
That idea isn’t unique to arbitration. Think about disputes over forum, jurisdiction, sovereign immunity,
or statutory rights to have something decided elsewhere. When the appeal asks “does this litigation go forward here,”
the temptation is to argue the district court should stop acting until the appellate court answers.

But portability has limits. Many interlocutory appeals touch only part of a case, and courts are reluctant to create automatic delays
that can be exploited strategically. So the fight often becomes a classification exercise:
Is this appeal about “where and whether” the case proceeds, or just about a slice of it?

The Fourth and Ninth Circuitsby disagreeinghelp define the boundary line. The Fourth Circuit emphasized the practical risk of concurrent jurisdiction and mootness.
The Ninth Circuit emphasized that not every statutorily permitted interlocutory appeal carries an automatic stop-the-world effect,
and that the stay framework can remain discretionary.

Concrete Examples of Litigation Impact

Example 1: The “Parallel Track” Nightmare

Suppose a case is remanded to state court, but an interlocutory appeal is authorized (for example, federal officer removal).
If the remand becomes effective immediately, state court proceedings can race forwarddiscovery, motion practice, even early trial scheduling
while the federal appellate court is simultaneously deciding whether the case should have stayed in federal court.
If the appeal later succeeds, you’ve burned time and money in a forum that, legally, shouldn’t have been driving the car.

Example 2: The “Everything’s Stayed… Except the Bills” Problem

On the other hand, automatic stays can be abused. If a party can trigger a stay by filing an appeal that is weak, strategic, or borderline frivolous,
the stay becomes a pressure tactic: delay the case, inflate costs, and force settlement through exhaustion.
Courts worried about this dynamic tend to prefer the discretionary Nken framework, which is built to filter out thin requests for a stay.

Example 3: Operational Disruption for Businesses

For companiesespecially those facing multi-district or multi-state public enforcement actionsforum instability is costly.
A stay rule that varies by circuit changes settlement leverage, discovery timing, and risk forecasting.
What looks like “procedure” to lawyers can look like “budget chaos” to everyone else.

Practical Guidance: How to Think About Coinbase-Style Stays

1) Identify what the appeal actually decides.

If the appeal is truly about whether the case can proceed in the district court at all, courts are more receptive to a strong stay argument.
If it’s only about a component (a claim, a party, a defense), the path to an automatic stay is steeper.

2) Map the “irreversible steps.”

In remand disputes, the irreversible step can be the transmittal of the remand order.
In arbitration disputes, it can be full-blown merits discovery or trial activity.
Good stay briefing names the step, explains why it can’t be undone cleanly, and ties it to the appellate issue.

3) Assume the court is watching for gamesmanship.

Post-Coinbase, courts are alert to the possibility that “automatic stay” arguments can be used as delay tactics.
If you want a court to stop the clock, you need to show urgency and legitimacy, not just clever citations.

4) Don’t forget the non-legal logistics.

Timing isn’t just “file fast.” It’s also: monitor the docket, coordinate with local counsel, prepare emergency motions,
and understand the clerk’s office mechanics. In remand appeals, the difference between “stayed” and “state court is already moving”
can be measured in hours, not days.

Experience Section: What Litigation Teams Actually Do After Coinbase (About )

Let’s talk “experience”not as in war medals and dramatic courtroom monologues, but as in the practical patterns litigation teams have developed
since Coinbase made stays feel less like a polite request and more like a jurisdictional event.
If Coinbase is the legal rulebook, these are the sticky notes lawyers slap on the margins when the case gets real.

1) The Inbox Watch Becomes a Mission-Critical Role

In remand-heavy cases, teams often assign someone to watch the docket like it’s a live sporting event. Not because they love PACER refresh buttons
(no one loves PACER refresh buttons), but because the remand “window” can be short. If the clerk transmits the order and state court takes over,
you may be arguing about stays while the state judge is already scheduling your next hearing. The operational lesson is simple:
treat remand timing like a deadline, not like a suggestion.

2) Stay Motions Are Written EarlyBefore You “Need” Them

One common post-Coinbase habit: drafting the stay motion while the remand motion is still pending. That sounds paranoid until you’ve seen a case
where a remand order drops on Friday afternoon and Monday morning the state court is ready to rumble. Having a stay package ready
complete with exhibits, declarations, and a crisp explanation of the appellate issuecan be the difference between being proactive and being chased
by a procedural stampede.

3) Teams Focus on “Irreversibility” Instead of Abstract Fairness

Coinbase arguments get traction when they explain what can’t be un-rung. In arbitration, it’s discovery and trial prep that destroy arbitration’s efficiencies.
In remand, it’s the jurisdictional transfer and parallel proceedings. Practically, lawyers increasingly frame stays around the “one-way door” problem:
if the court lets this step happen, what harm cannot be fixed latereven if the appellant ultimately wins?

4) Strategy Includes State Court, Not Just Federal Court

Another real-world shift: teams plan for what happens if the case lands back in state court during the appeal.
That means monitoring state filings, preparing to explain the appeal’s posture to a state judge, and considering whether any state-court pause mechanisms exist.
Even in circuits that don’t treat Coinbase as an automatic stay for remand appeals, good teams don’t treat state court as “tomorrow’s problem.”
They treat it as “possibly later this afternoon.”

5) The New Reality: Procedure Can Change Leverage Overnight

Finally, Coinbase has become a negotiation factor. A party who can credibly freeze litigation pending appeal may gain settlement leverage.
A party who can keep the case moving may do the same. That doesn’t make outcomes unfairit just means “forum and timing” are now visibly
part of the risk analysis. If you want to understand a case’s settlement posture post-Coinbase, you don’t just ask “what are the claims?”
You ask “where is it going to be litigated next week?”

Note: This article is for general informational purposes only and does not constitute legal advice.
Stay rules are highly context-specific and can vary by circuit, statute, and procedural posture.