Interlocutory Appeals

By Elizabeth Franklin-Best, Esq., and Christopher Zoukis, JD, MBA

Can you appeal before the case is over?

In a federal criminal case, you generally cannot appeal until there is a final judgment. 28 U.S.C. § 1291 gives the courts of appeals jurisdiction over “final decisions,” and that rule is applied strictly in criminal cases. A short list of exceptions exists — double jeopardy, detention orders, forced medication, and a few others — and the government has appeal rights a defendant does not.

Key takeaways on interlocutory appeals

• The final judgment rule is the starting point and it is applied more strictly in criminal cases than in civil ones.
• The collateral order doctrine from Cohen v. Beneficial Industrial Loan Corp., 337 U.S. 541 (1949), is the narrow exception — a “small class” of orders.
• Double jeopardy denials are immediately appealable: Abney v. United States, 431 U.S. 651 (1977). A challenge to the sufficiency of the indictment is not.
• Detention and release orders are separately reviewable under 18 U.S.C. § 3145 and Fed. R. App. P. 9.
• Forced-medication orders are appealable collateral orders: Sell v. United States, 539 U.S. 166 (2003).
• The government may appeal dismissals and suppression orders under 18 U.S.C. § 3731 — rights the defendant does not have.
• Mandamus exists but is, in the Supreme Court’s words, one of “the most potent weapons in the judicial arsenal,” and requires three conditions.

The criminal exceptions to the final judgment rule

This is the table to read. Each row is a recognized route, with its authority, so an issue can be checked against the list rather than guessed at.

The order	Immediately appealable?	Who can appeal	Authority
Denial of a motion to dismiss on double jeopardy grounds	Yes	Defendant	Abney v. United States, 431 U.S. 651 (1977)
Denial of a motion to dismiss for failure to state an offense	No — “plainly not ‘collateral’ in any sense of that term”	—	Abney, 431 U.S. 651
Pretrial detention or release order	Yes, by separate statutory route	Defendant or government	18 U.S.C. § 3145; Fed. R. App. P. 9
Order authorizing forced antipsychotic medication to restore competence	Yes — an appealable collateral order	Defendant	Sell v. United States, 539 U.S. 166 (2003)
Denial of a motion to dismiss under the Speech or Debate Clause	Yes, for a Member of Congress	Defendant	Helstoski v. Meanor, 442 U.S. 500 (1979)
Denial of a motion to reduce bail	Yes	Defendant	Stack v. Boyle, 342 U.S. 1 (1951)
Order dismissing an indictment or information	Yes	Government	18 U.S.C. § 3731
Order granting a new trial after verdict or judgment	Yes	Government	§ 3731
Order suppressing or excluding evidence, or requiring return of seized property	Yes, pre-jeopardy, with U.S. attorney certification	Government	§ 3731
Denial of a suppression motion	No	—	§ 1291 final judgment rule
Denial of a severance motion	No	—	§ 1291
Denial of a motion to dismiss on speedy trial grounds	No	—	United States v. MacDonald, 435 U.S. 850 (1978)
Denial of a motion to dismiss for vindictive prosecution	No	—	United States v. Hollywood Motor Car Co., 458 U.S. 263 (1982)
Denial of a motion to dismiss for a grand jury secrecy (Rule 6(e)) violation	No	—	Midland Asphalt Corp. v. United States, 489 U.S. 794 (1989)
Pretrial disqualification of defense counsel	No	—	Flanagan v. United States, 465 U.S. 259 (1984)
Adverse discovery ruling	No	—	§ 1291
Denial of a continuance	No	—	§ 1291
Denial of a motion to disqualify the judge	No, ordinarily — mandamus is the route	—	§ 1291; Cheney v. U.S. District Court, 542 U.S. 367 (2004)
Sentence, conviction, final judgment	Yes — this is the ordinary appeal	Defendant	§ 1291; 18 U.S.C. § 3742

The pattern in the “No” rows is worth naming: an order is not appealable simply because it is important, or because it will shape the trial, or because getting it wrong will be expensive to fix later. Those are the ordinary features of pretrial rulings, and the final judgment rule exists precisely to make them wait.

Applied Insight — Elizabeth Franklin-Best, Esq., Principal Attorney: The question that brings people to this topic is almost always a suppression denial. It feels like the case is over, and it often is as a practical matter — and it is not appealable now. The two real options are a conditional plea under Fed. R. Crim. P. 11(a)(2), which preserves the ruling for appeal, or trial and then a direct appeal. Choosing between them is a decision to make deliberately, before the plea, not after.

The general rule: no appeal until final judgment

28 U.S.C. § 1291 provides that the courts of appeals “shall have jurisdiction of appeals from all final decisions of the district courts of the United States.” In a criminal case, the final decision is the judgment — conviction and sentence.

The rule is not a formality; it reflects a policy the Supreme Court has enforced with particular firmness in criminal cases. Piecemeal appellate review of pretrial rulings would fragment prosecutions, delay trials, and give defendants an incentive to appeal every adverse ruling as a delay tactic. As the Third Circuit put it in United States v. McQuilkin, 673 F.2d 681 (3d Cir. 1982), quoting the Supreme Court’s language in Abney, the policy against piecemeal review is at its strongest in “the fair administration of the criminal law.”

The practical consequence for a defendant mid-case is stark. A ruling that seems to decide the outcome — evidence coming in that should have been suppressed, a co-defendant not severed, a witness allowed to testify — is reviewable only after conviction and sentence, on the ordinary direct appeal. See how to appeal a federal conviction.

The collateral order doctrine

The narrow exception comes from a civil case: Cohen v. Beneficial Industrial Loan Corp., 337 U.S. 541 (1949). The Court described the category as:

“that small class which finally determine claims of right separable from, and collateral to, rights asserted in the action, too important to be denied review and too independent of the cause itself to require that appellate consideration be deferred until the whole case is adjudicated.”

Three requirements are packed into that sentence, and an order must satisfy all of them:

Requirement	What it means	Why most criminal orders fail it
Conclusively determines the disputed question	The ruling is final on the point, not tentative	Many pretrial rulings are provisional or revisitable at trial
Resolves an important issue separate from the merits	The question is independent of guilt or innocence	Most pretrial rulings go directly to what evidence will prove guilt
Effectively unreviewable on appeal from final judgment	Waiting would irretrievably lose the right	Most rulings can be reviewed and corrected after judgment

The third requirement does the most work, and it explains the shape of the whole list. The rights that qualify are rights not to be tried at all — a right that is destroyed the moment the trial happens, and that no post-judgment remedy can restore. A right not to be convicted on this evidence is fully vindicable on appeal after judgment; a right not to be tried a second time is not.

“With the utmost strictness”: the Supreme Court’s own count

The single most useful passage on this subject appears in Midland Asphalt Corp. v. United States, 489 U.S. 794 (1989), where the Court took stock of forty years of its own decisions:

“We have interpreted the collateral order exception ‘with the utmost strictness’ in criminal cases. Although we have had numerous opportunities in the 40 years since Cohen to consider the appealability of prejudgment orders in criminal cases, we have found denials of only three types of motions to be immediately appealable: motions to reduce bail, Stack v. Boyle, 342 U. S. 1 (1951), motions to dismiss on double jeopardy grounds, Abney v. United States, 431 U. S. 651 (1977), and motions to dismiss under the Speech or Debate Clause, Helstoski v. Meanor, 442 U. S. 500 (1979).”

Three, in forty years. That is the honest measure of how narrow this doctrine is, and it comes from the Court rather than from any commentator.

One update to that count. Midland Asphalt was decided in 1989. In 2003 the Court added a fourth category in Sell v. United States, 539 U.S. 166, holding that an order authorizing forced antipsychotic medication to render a defendant competent for trial is an appealable collateral order. Any page reproducing the Midland Asphalt list without noting Sell is quoting a count that is thirty-odd years out of date; any page presenting a long menu of criminal interlocutory appeals is describing something that does not exist.

The test the Court actually applies: a right not to be tried

Midland Asphalt also supplies the analytical key, and it is the thing to test your own issue against.

The third Cohen condition, the Court said, “is satisfied only where the order at issue involves ‘an asserted right the legal and practical value of which would be destroyed if it were not vindicated before trial'” (quoting United States v. MacDonald, 435 U.S. 850, 860 (1978)).

Then the distinction that decides these cases:

“There is a ‘crucial distinction between a right not to be tried and a right whose remedy requires the dismissal of charges.'”

And what qualifies as the former:

“A right not to be tried in the sense relevant to the Cohen exception rests upon an explicit statutory or constitutional guarantee that trial will not occur — as in the Double Jeopardy Clause (‘nor shall any person be subject for the same offence to be twice put in jeopardy of life or limb’), see Abney v. United States, or the Speech or Debate Clause (‘[F]or any Speech or Debate in either House, [the Senators and Representatives] shall not be questioned in any other Place’), see Helstoski v. Meanor.”

This is why the list is three or four items long rather than thirty. The Constitution contains very few provisions that say, in terms, that a trial shall not happen. Almost every other right a defendant holds — to suppress evidence, to a severance, to a speedy trial, to counsel of choice — is a right about how the trial is conducted or whether the conviction can stand, and each of those is remediable after judgment.

Midland Asphalt applied this to a grand jury secrecy violation under Fed. R. Crim. P. 6(e) and held the order not appealable, adding the memorable limit: “Only a defect so fundamental that it causes the grand jury no longer to be a grand jury, or the indictment no longer to be an indictment, gives rise to the constitutional right not to be tried. An isolated breach of the traditional secrecy requirements does not do so.”

What the Court has held is not immediately appealable

The negative cases are more instructive than the positive ones, because they are where most real issues land.

The order	Held not appealable	Authority
Pretrial disqualification of defense counsel	Yes — not appealable	Flanagan v. United States, 465 U.S. 259 (1984)
Denial of a motion to dismiss for failure to state an offense	Yes — not appealable	Abney v. United States, 431 U.S. 651 (1977)
Denial of a motion to dismiss for an alleged grand jury secrecy (Rule 6(e)) violation	Yes — not appealable	Midland Asphalt Corp. v. United States, 489 U.S. 794 (1989)
Denial of a motion to dismiss for vindictive prosecution	Yes — not appealable	United States v. Hollywood Motor Car Co., 458 U.S. 263 (1982)
Denial of a motion to dismiss on speedy trial grounds	Yes — not appealable	United States v. MacDonald, 435 U.S. 850 (1978)

Flanagan is worth dwelling on because counsel-of-choice feels like exactly the sort of right that must be protected before trial. The Court held otherwise: “We decide today that a District Court’s pretrial disqualification of defense counsel in a criminal prosecution is not immediately appealable under 28 U. S. C. § 1291.” Its reasoning cuts both ways depending on how the underlying right is characterized, and the analysis is a useful template:

• If the right requires a showing of prejudice to the defense, the order is not truly collateral — “a disqualification order, though final, is not independent of the issues to be tried. Its validity cannot be adequately reviewed until trial is complete. The effect of the disqualification on the defense, and hence whether the asserted right has been violated, cannot be fairly assessed until the substance of the prosecution’s and defendant’s cases is known.”
• If the right requires no showing of prejudice, then the order “is not ‘effectively unreviewable on appeal from a final judgment'” — because a violation could simply be corrected on appeal.

Either way, the appeal fails. That pincer is the reason so few criminal orders qualify.

Flanagan also restates the three Cohen conditions in the form courts most often quote, drawn from Coopers & Lybrand v. Livesay, 437 U.S. 463, 468 (1978): the order “must conclusively determine the disputed question”; must “resolve an important issue completely separate from the merits of the action”; and must “be effectively unreviewable on appeal from a final judgment.”

Why criminal cases are treated more strictly than civil ones

The strictness is deliberate and the Court has explained it.

Flanagan notes that the final judgment policy “is at its strongest in the field of criminal law,” quoting Cobbledick v. United States for the proposition that the reasons for the rule are “especially compelling in the administration of criminal justice.” The Court’s stated grounds: “Promptness in bringing a criminal case to trial has become increasingly important as crime has increased, court dockets have swelled, and detention facilities have become overcrowded.”

And, notably, the interest is not only the government’s. As Flanagan puts it, quoting Barker v. Wingo, 407 U.S. 514, 519 (1972): “there is a societal interest in providing a speedy trial which exists separate from, and at times in opposition to, the interests of the accused.”

That last clause is worth sitting with. The rule that prevents you from appealing a bad pretrial ruling is the same rule that prevents the case from being suspended for a year at a time. In a criminal case, and especially for a detained defendant, delay is not a neutral cost.

Abney: what it holds, and what it does not

Abney v. United States, 431 U.S. 651 (1977), is the central criminal application of Cohen, and it is routinely half-quoted.

The half everyone cites. The Court held: “The District Court’s pretrial order denying petitioners’ motion to dismiss the indictment on double jeopardy grounds was a ‘final decision’ within the meaning of § 1291, and thus was immediately appealable.” The reasoning is the Cohen third factor: as the Third Circuit later summarized the point, “the rights conferred on a criminal accused by the Double Jeopardy Clause would be significantly undermined if appellate review of double jeopardy claims were postponed until after conviction and sentence.”

The half almost nobody cites, and the more useful one. In the same case, the petitioners also challenged the sufficiency of the indictment, and the Court held it had no jurisdiction over that challenge: “The court of Appeals had no jurisdiction under § 1291 to pass on the merits of petitioners’ challenge to the sufficiency of the indictment, since the District Court’s rejection of such challenge does not come within the Cohen exception.”

Why not? The Court gave two reasons, and they are the best available test for whether any given pretrial order qualifies:

“First, an order denying a motion to dismiss an indictment for failure to state an offense is plainly not ‘collateral’ in any sense of that term; rather it goes to the very heart of the issues to be resolved at the upcoming trial. Secondly, the issue resolved adversely to petitioners is such that it may be reviewed effectively, and, if necessary, corrected if and when a final judgment results.”

Apply that two-part question to your own issue. Does it go to the heart of what the trial will decide? Then it is not collateral. Can it be effectively reviewed and corrected after judgment? Then it waits. Nearly every pretrial ruling a defendant wants to appeal answers “yes” to at least one, and that is the end of the analysis.

Abney also carries a limitation defendants sometimes miss: taking a permitted interlocutory appeal on the double jeopardy question does not open the door to appellate review of everything else pending in the case. The jurisdiction is issue-specific.

Sell: forced medication to restore competence

Sell v. United States, 539 U.S. 166 (2003), recognized another collateral order and, in doing so, set the substantive standard.

On jurisdiction, the Court held that “[t]he District Court’s pretrial order was an appealable ‘collateral order’ within the exceptions to the rule that only final judgments are appealable,” because “[t]he order conclusively determines the disputed question whether Sell has a legal right to avoid forced medication.” The logic is again Cohen‘s third factor: once the drugs have been administered, no appeal after judgment can undo it.

On the merits, Sell requires a court to find four things before authorizing involuntary medication solely to render a defendant competent for trial:

1. Important governmental interests are at stake. “The Government’s interest in bringing to trial an individual accused of a serious crime is important” — but “courts must consider each case’s facts in evaluating this interest because special circumstances may lessen its importance.”
2. Forced medication will significantly further those interests. The court “must find that medication is substantially likely to render the defendant competent to stand trial and substantially unlikely to have side effects that will interfere significantly with the defendant’s ability to assist counsel in conducting a defense.”
3. It is necessary. The court must “find that alternative, less intrusive treatments are unlikely to achieve substantially the same results.”
4. It is medically appropriate.

The Court expected the combination to be rare: “these instances may be rare.” It also noted a sequencing point that matters in practice — where medication could be authorized on an alternative ground such as dangerousness, “the need to consider authorization on trial competence grounds will likely disappear,” and there are “often strong reasons for a court to consider alternative grounds first.”

Detention and release orders

The other route out of the final judgment rule is not a collateral order doctrine case at all — it is a separate statutory scheme.

Under 18 U.S.C. § 3145, a release order is reviewable under subsection (a) and a detention order is appealable under subsection (b), and the statute directs in each case that the matter “shall be determined promptly.” Fed. R. App. P. 9 supplies the procedure and requires that “[t]he district court must state in writing, or orally on the record, the reasons for an order regarding the release or detention of a defendant in a criminal case.”

Two features distinguish this route from the collateral order doctrine. It is statutory, so it does not depend on satisfying the three Cohen conditions at all. And it is fast — the statute’s “determined promptly” language, and Rule 9’s requirement that the district court state its reasons, exist to keep custody questions from moving at ordinary appellate speed.

The Rule 9(a)(1) reasons requirement is the practically useful part. An order denying release without stated reasons gives the court of appeals nothing to review, and asking the district court to state its reasons on the record at the time of denial is both proper and a precondition to meaningful review.

This is the one interlocutory route that a large number of federal defendants actually use, and it operates both before trial and after judgment. For the post-judgment version — release while the appeal runs — see appeal bond.

What the government can do that you cannot

The asymmetry here is real, statutory, and worth understanding rather than resenting.

18 U.S.C. § 3731 gives the United States interlocutory appeal rights with no defense counterpart:

Dismissals. “In a criminal case an appeal by the United States shall lie to a court of appeals from a decision, judgment, or order of a district court dismissing an indictment or information or granting a new trial after verdict or judgment, as to any one or more counts, or any part thereof, except that no appeal shall lie where the double jeopardy clause of the United States Constitution prohibits further prosecution.”

Suppression orders. “An appeal by the United States shall lie to a court of appeals from a decision or order of a district court suppressing or excluding evidence or requiring the return of seized property in a criminal proceeding, not made after the defendant has been put in jeopardy and before the verdict or finding on an indictment or information, if the United States attorney certifies to the district court that the appeal is not taken for purpose of delay and that the evidence is a substantial proof of a fact material in the proceeding.”

Three features of that second provision are worth noting. It is available only before jeopardy attaches — once the jury is sworn, the window closes. It requires a personal certification by the United States attorney, which is a real filter rather than a formality. And the appeal must be taken “within thirty days after the decision, judgment or order has been rendered and shall be diligently prosecuted.”

Finally, the statute contains an interpretive instruction that has no defense-side equivalent: “The provisions of this section shall be liberally construed to effectuate its purposes.”

So: a defendant who loses a suppression motion must be convicted and sentenced before the ruling can be reviewed. The government that loses one can appeal immediately, and the statute tells courts to read its right generously. That is the asymmetry, stated plainly.

The one boundary that runs the government’s way is the double jeopardy exception written into § 3731 itself — no appeal lies “where the double jeopardy clause of the United States Constitution prohibits further prosecution.” That is the same clause that gives the defendant the Abney route, working in the other direction.

When a double jeopardy claim actually arises

Because double jeopardy is the main defendant-side interlocutory route, it is worth knowing when the claim genuinely exists rather than assuming it covers any second proceeding.

The Double Jeopardy Clause provides that no person shall “be subject for the same offence to be twice put in jeopardy of life or limb.” Jeopardy attaches in a jury trial when the jury is empanelled and sworn, and in a bench trial when the first witness is sworn. Nothing before that point can support the claim — which is why a defendant facing a superseding indictment before trial generally has no interlocutory route.

The situations that do generate colorable claims:

After a mistrial. If the court declared a mistrial over the defendant’s objection, retrial is barred unless there was “manifest necessity” for the mistrial. If the defendant consented to or requested the mistrial, retrial is ordinarily permitted — with a narrow exception where the prosecution goaded the defendant into moving for it.

After an acquittal. An acquittal is final. The government cannot appeal it and cannot retry, which is why 18 U.S.C. § 3731 itself excepts from the government’s appeal rights any case “where the double jeopardy clause of the United States Constitution prohibits further prosecution.”

After a reversal for insufficient evidence. This is the appellate-stage version, and it comes from Burks v. United States, 437 U.S. 1 (1978): reversal for evidentiary insufficiency bars retrial, while reversal for trial error does not. See what happens after an appeal is granted.

Successive prosecutions for the same offense. Whether two charges are the “same offence” turns on whether each requires proof of a fact the other does not — the test from Blockburger v. United States, 284 U.S. 299 (1932). Note the significant limit: a federal prosecution following a state prosecution for the same conduct is generally permitted under the dual-sovereignty doctrine, which disappoints a great many defendants who assume otherwise.

Multiple punishments in a single prosecution. Where the same conduct is charged in multiple counts carrying cumulative punishment, the claim is one of multiplicity, and it is ordinarily raised by pretrial motion under Fed. R. Crim. P. 12(b)(3)(B).

A denial of a colorable double jeopardy motion is immediately appealable under Abney. A denial of a motion that is not colorable is not converted into an appealable order by labeling it double jeopardy — courts screen for that, and a frivolous double jeopardy appeal will not stop the trial. Whether a double jeopardy argument is available at all is a question about the record and about preservation: see grounds for appeal and preserving error for appeal.

Competency and commitment orders

A related and frequently overlooked category involves mental competence, and it is governed by statute rather than by the collateral order doctrine alone.

Under 18 U.S.C. § 4241, a court that finds a defendant incompetent to stand trial commits the defendant to the custody of the Attorney General for hospitalization to determine whether competence can be restored. Under 18 U.S.C. § 4243, a defendant found not guilty only by reason of insanity is committed unless they establish eligibility for release.

Commitment orders under these provisions have a stronger claim to immediate appealability than most pretrial rulings — and, like detention orders, they raise the custody questions covered at appeal bond — for the Cohen reason: a person confined under a commitment order is confined now, and a post-judgment appeal — in a case that by definition may never reach judgment — cannot restore the liberty lost in the interim.

Sell v. United States, 539 U.S. 166 (2003), sits alongside this. Its sequencing observation is practically important: where medication could be authorized on an alternative ground such as dangerousness, “the need to consider authorization on trial competence grounds will likely disappear,” and there are “often strong reasons for a court to consider alternative grounds first” — because the dangerousness inquiry “is usually more objective and manageable” than the competence inquiry.

Appeals by people who are not the defendant

Some of the most viable interlocutory appeals in a criminal case are taken by someone other than the accused, and this is the part of the topic almost nothing on the open web covers.

Grand jury subpoena recipients. A witness or company served with a grand jury subpoena who believes it is unlawful cannot ordinarily appeal an order denying a motion to quash — the classic route is to refuse compliance, be held in contempt, and appeal the contempt order, which is final as to the witness. Where the material is held by a third party such as a bank or a lawyer who will simply comply rather than risk contempt, the person whose interest is at stake may have no other route, and the Perlman line of authority addresses that situation.

Privilege holders. An order compelling disclosure of attorney-client or work-product material affects a right that is destroyed the moment disclosure occurs — one of the few genuinely “unreviewable later” harms, and one of the recurring bases for mandamus.

The press and the public. Orders closing proceedings or sealing records are challenged by intervenors who are not parties to the prosecution and who have no final judgment to appeal from.

Crime victims. The Crime Victims’ Rights Act supplies an express and unusually fast route. 18 U.S.C. § 3771(d)(3) provides that the district court “shall take up and decide any motion asserting a victim’s right forthwith,” and that “[i]f the district court denies the relief sought, the movant may petition the court of appeals for a writ of mandamus.” The timetable is remarkable: “The court of appeals shall take up and decide such application forthwith within 72 hours after the petition has been filed,” it “shall apply ordinary standards of appellate review,” and “[i]n no event shall proceedings be stayed or subject to a continuance of more than five days for purposes of enforcing this chapter.” If relief is denied, “the reasons for the denial shall be clearly stated on the record in a written opinion.”

That is a faster and more generous interlocutory mechanism than anything available to the defendant, and defense counsel should know it exists — a victim’s § 3771 mandamus petition can materially affect the course of a case on 72 hours’ notice.

If the government appeals after you win a motion

This situation deserves its own treatment because it is disorienting and because the searcher arriving at it is usually frightened rather than curious.

You won a suppression motion, or the indictment was dismissed, and instead of the case ending the prosecutor filed a notice of appeal. That is lawful, it is common, and it is governed by 18 U.S.C. § 3731.

What to expect:

The case pauses. The district court proceedings are effectively suspended pending the appeal, and that period is generally excluded from Speedy Trial Act computation.

Your custody status does not automatically change. If you were detained, you generally remain detained; if you were released on conditions, those conditions generally continue. Detention is governed by its own statute, and a government appeal is not itself a basis for release.

The government had to certify. For a suppression appeal, § 3731 requires that “the United States attorney certifies to the district court that the appeal is not taken for purpose of delay and that the evidence is a substantial proof of a fact material in the proceeding.” That certification is a document in the record, and its adequacy and timeliness are checkable.

The 30-day deadline is real. The statute requires the appeal be “taken within thirty days after the decision, judgment or order has been rendered and shall be diligently prosecuted.” A late government appeal is challengeable.

You are the appellee. The posture reverses: the government files the opening brief and carries the burden of showing the district court erred; your counsel responds. The district court’s ruling in your favor comes with whatever deference the applicable standard of review affords — which, for the factual findings underlying a suppression ruling, is clear error.

Timing runs on the ordinary appellate calendar. Expect months, not weeks. See how long does an appeal take, and criminal appeals lawyer on who should handle a government appeal in which you are suddenly the appellee.

Mandamus: the alternative when no appeal lies

When a ruling is not appealable and the harm is genuinely irreparable, the remaining route is a petition for a writ of mandamus. It is available, and it is very rarely granted.

Cheney v. U.S. District Court, 542 U.S. 367 (2004), sets out the framework. The writ is “one of ‘the most potent weapons in the judicial arsenal,'” and the Court identified three conditions, all required:

Condition	The Court’s language	What it means in practice
1. No other adequate means	“the party seeking issuance of the writ [must] have no other adequate means to attain the relief he desires”	A condition “designed to ensure that the writ will not be used as a substitute for the regular appeals process”
2. Clear and indisputable right	the petitioner must satisfy “the burden of showing that [his] right to issuance of the writ is ‘clear and indisputable'”	Not merely that the district court was wrong — that it was indisputably wrong
3. Appropriate in the circumstances	“even if the first two prerequisites have been met, the issuing court, in the exercise of its discretion, must be satisfied that the writ is appropriate under the circumstances”	Discretionary, even on a clear showing

Condition 1 is what forecloses most criminal mandamus petitions. If the ruling can be reviewed on appeal after final judgment — which nearly all of them can — there is another adequate means, and the petition fails at the first step. The situations where mandamus genuinely fits tend to involve disclosure of privileged material, orders affecting a third party who will never have a direct appeal, or a district court’s refusal to exercise jurisdiction it is obliged to exercise.

Mandamus is also procedurally distinct from an appeal: it is an original proceeding in the court of appeals against the district court, governed by Fed. R. App. P. 21, and the petition is directed to the court rather than filed as an appeal from a judgment.

What a defendant who is unhappy mid-case can actually do

This is the practical section, and it is the one most competing pages skip because the honest answers are undramatic.

Ask the district court to reconsider. There is no rule requiring the district court to entertain reconsideration in a criminal case, but district judges routinely revisit pretrial rulings, particularly evidentiary ones that were decided provisionally. A ruling reserved “subject to how the evidence develops” is an invitation to raise it again at trial — and doing so is also necessary to preserve it. See preserving error for appeal.

Make the record. If a ruling will be reviewed only after judgment, the review will be conducted on whatever the record shows. This is the moment to make an offer of proof for excluded evidence under Fed. R. Evid. 103(a)(2), to state objections with specific grounds, and to ensure the district court’s reasoning is on the record.

Consider a conditional plea. Under Fed. R. Crim. P. 11(a)(2), a defendant may enter a conditional guilty plea reserving in writing the right to appeal a specified adverse pretrial ruling. For a suppression denial, this is frequently the decisive strategic choice — it converts an unappealable interlocutory ruling into a reviewable issue without a trial. It requires the government’s consent and the court’s approval, and it must be negotiated before the plea is entered.

Go to trial and appeal. The ordinary route, and often the right one where the ruling is outcome-determinative and the issue is strong.

Check whether the issue is actually on the list. If the complaint is double jeopardy, detention, or forced medication, there is a route now. Everything else waits.

How long an interlocutory appeal takes, and what happens to the case meanwhile

An interlocutory appeal does not run on a faster track simply because it is interlocutory — with the notable exception of release and detention appeals, which the statute directs be “determined promptly.”

For everything else, the ordinary appellate timeline applies: the median from filing of the notice of appeal to the last opinion or final order was 10.2 months for appeals terminated on the merits in the 12 months ending September 30, 2025, with circuit medians ranging from 5.3 months to 15.2 months (AO Table B-4A). See how long does an appeal take.

That timeline is the hidden cost of an interlocutory appeal. A double jeopardy appeal that takes a year is a year in which the underlying prosecution is suspended and, in most cases, the defendant’s custody status is unchanged. For a detained defendant, an interlocutory appeal that succeeds after fourteen months may be a worse practical outcome than a trial that starts in three.

Applied Insight — Christopher Zoukis, JD, MBA, Managing Director: The calculation families rarely make is the custody one. An interlocutory appeal pauses the case, not the clock a detained person is living through. Before pursuing one, it is worth asking counsel plainly: if this succeeds, when does the case actually end, and where will the client be in the meantime? Sometimes the answer justifies it. Often the answer changes the decision.

What happens to the case while an interlocutory appeal is pending

Taking an interlocutory appeal is not a neutral act, and its procedural consequences are worth understanding before deciding.

The district court loses jurisdiction over the appealed issue. A properly taken appeal divests the district court of control over the aspects of the case involved in the appeal. It does not automatically halt everything — the district court retains authority over matters not before the court of appeals — but as a practical matter a double jeopardy appeal suspends the trial.

The trial does not simply resume when you lose. The case waits for the mandate, which under Fed. R. App. P. 41(b) issues 7 days after the time to file a rehearing petition expires, or 7 days after denial of a timely petition, whichever is later. An appeal decided in month eleven does not return the case in month eleven.

Speedy Trial Act time is generally excluded. Delay resulting from an interlocutory appeal is among the periods excluded from the Speedy Trial Act computation, so the months spent on appeal do not count toward the clock that would otherwise require dismissal under 18 U.S.C. § 3162(a)(2). A defendant hoping the delay itself will produce a dismissal is misreading the statute.

Custody status usually does not change. A detained defendant remains detained. The detention order is separately reviewable under 18 U.S.C. § 3145, but the pendency of an interlocutory appeal is not itself a reason for release.

A frivolous appeal can be treated as such. Courts have tools for defendants who file non-colorable double jeopardy appeals to delay trial, including proceeding with trial despite the filing where the claim is found frivolous. The tactic is well known and does not work.

Interlocutory appeals after judgment: a note on terminology

One further source of confusion deserves clearing up, because it sends readers to the wrong page.

Orders entered after final judgment — denial of a § 2255 motion, denial of a sentence-reduction motion under § 3582(c), a ruling in a supervised release revocation — are not interlocutory appeals. They are appeals from separate final orders in post-judgment proceedings, and they have their own rules. A § 2255 appeal, for instance, requires a certificate of appealability, which is a limitation with no analogue in a direct criminal appeal.

If that is your situation, the relevant material is on our post-conviction pages rather than here: see certificate of appealability and what happens after filing a 2255.

Similarly, the ordinary appeal from a conviction and sentence — however early it feels — is not interlocutory. It is the direct appeal, and it is covered at how to appeal a federal conviction and grounds for appeal.

Civil interlocutory appeals are a different subject

Because most search results for this term are civil, it is worth marking the boundary clearly.

In civil litigation, 28 U.S.C. § 1292 provides routes that have no criminal analogue — appeals from injunction orders under § 1292(a)(1), and the certified-question procedure under § 1292(b), under which a district court may certify an order involving “a controlling question of law as to which there is substantial ground for difference of opinion” and the court of appeals may in its discretion permit an appeal.

There is no § 1292(b) equivalent in federal criminal cases. A federal criminal defendant cannot ask the district judge to certify a question for interlocutory review, and no amount of importance or disagreement creates that route. Pages describing the certification procedure are describing civil practice.

The collateral order doctrine, by contrast, applies in both — it originated in Cohen, a civil case, and was carried into criminal practice by Abney. But its application in criminal cases is substantially narrower, for the piecemeal-review reasons above.

How to test your own issue in four questions

Rather than scanning the list for something that resembles your situation, work through the analysis the courts actually use. Unless a statute gives a separate route (question 2), an unfavorable answer to any of the other questions means the appeal does not lie.

1. Is there an explicit statutory or constitutional guarantee that the trial will not occur? Midland Asphalt is categorical on this: a right not to be tried “rests upon an explicit statutory or constitutional guarantee that trial will not occur.” The Double Jeopardy Clause says a person shall not “be twice put in jeopardy.” The Speech or Debate Clause says a Member “shall not be questioned in any other Place.” If you cannot point to comparable language, the answer to this question is no, and the analysis is effectively over.

2. Or does a statute give a separate route? Detention and release orders qualify not through Cohen but through § 3145 and Rule 9. The government’s rights come from § 3731. A victim’s come from § 3771(d)(3). Statutory routes are the second family of exceptions and they are easy to overlook because they are not “collateral order” cases at all.

3. Does the order conclusively determine an issue separate from the merits? If establishing the violation requires showing prejudice to the defense, Flanagan says the order is not separate from the merits, because prejudice cannot be assessed until the trial has happened.

4. Would the harm be irreparable — destroyed if not vindicated before trial? If the ruling can be reviewed and corrected after judgment, it will be. Expense, inconvenience, and even the burden of standing trial are not, on their own, irreparable in the relevant sense.

If all four fail — as they do in the overwhelming majority of cases — the honest answer is that the issue waits for the direct appeal, and the productive work now is preservation rather than appeal. See preserving error for appeal and standard of review appeal.

Why work with Elizabeth Franklin-Best, P.C.

Elizabeth Franklin-Best, P.C. is a boutique federal criminal defense and appellate firm founded in 2019, with a national practice run on an intentionally small caseload. Elizabeth Franklin-Best is admitted to the U.S. Supreme Court and twelve of the thirteen U.S. Courts of Appeals — every regional circuit (1st–11th) plus the D.C. Circuit — and has handled more than 330 federal proceedings, over 100 of them appeals, with sixteen published decisions as counsel of record. She is recognized by Best Lawyers in America 2026 for Appellate Practice and by Chambers USA 2026 for white-collar litigation.

Interlocutory questions are jurisdictional questions, and they are answered by reading the order against the Cohen/Abney criteria rather than by how consequential the ruling feels. That assessment is quick, and it is worth getting right before time is spent on a filing the court has no power to hear.

Talk to a federal appeals attorney

If a ruling has gone against you and the case has not ended, the first question is jurisdictional: whether a court of appeals can hear it at all right now.

Schedule a consultation · Phone: (843) 620-1100 · Columbia office: 3710 Landmark Dr #113, Columbia, SC 29204

Elizabeth Franklin-Best, P.C. represents clients in federal courts nationwide as a federal appeals lawyer. Consultations are confidential.

Related guides on appellate jurisdiction

• Federal appeals lawyer — the hub: how a federal criminal appeal works end to end
• How to appeal a federal conviction — the ordinary post-judgment route, step by step
• Grounds for appeal — what can and cannot be raised once you get there
• Standard of review appeal — how much deference each kind of ruling receives
• Preserving error for appeal — what to do now if the ruling has to wait
• Appeal bond — custody while any appeal is pending
• Federal appeals court — which circuit hears it, and its local rules
• How long does an appeal take — the timeline an interlocutory appeal adds
• What happens after an appeal is granted — the dispositions and what follows
• Criminal appeals lawyer — choosing counsel for a jurisdictional question
• Anders brief — if appointed counsel says there is no issue
• Petition for rehearing — after a panel rules
• Certiorari petition — the last step in the appellate path

Frequently Asked Questions About Interlocutory Appeals

Reviewed for legal accuracy by Elizabeth Franklin-Best, Esq., Principal Attorney·September 2026