The U.S. Courts of Appeals

The U.S. Courts of Appeals

The U.S. Courts of Appeals are the principal intermediate appellate courts of the federal judiciary of the United States. They sit above the federal district courts and below the U.S. Supreme Court in the ordinary federal judicial hierarchy.

Their central function is appellate review.

When a party believes that a federal district court made a significant legal or procedural error, the party may, when the law permits, ask the appropriate court of appeals to review the decision. The court of appeals does not ordinarily conduct a new trial. Instead, it examines the record developed in the lower court and determines whether the district court correctly applied the law and followed the applicable procedures.

There are 13 federal courts of appeals. Twelve are geographic regional circuits, while the U.S. Court of Appeals for the Federal Circuit has nationwide jurisdiction over particular categories of cases.

The courts of appeals are critically important because most federal appeals end at this level. The Supreme Court reviews only a small percentage of the cases that could potentially come before it.

The courts of appeals therefore play a central role in developing federal law, supervising federal trial courts, resolving legal disputes, and maintaining consistency within their respective jurisdictions.

---

1. What Is a U.S. Court of Appeals?

A U.S. Court of Appeals is a federal appellate court that reviews qualifying decisions of lower federal courts and, in certain circumstances, federal administrative agencies and other governmental bodies.

The courts of appeals are sometimes called circuit courts or simply federal appellate courts.

Their primary task is not to decide cases from scratch.

Instead, appellate judges generally ask questions such as:

• Did the lower court apply the correct legal rule?
• Did the court interpret the statute correctly?
• Did the judge make a reversible procedural error?
• Was evidence improperly admitted or excluded?
• Was the jury properly instructed?
• Was the lower court’s factual finding clearly erroneous?
• Did the court have jurisdiction?
• Was the defendant’s constitutional right violated?
• Did the court impose an unlawful sentence?

The precise question depends on the nature of the appeal.

For an accessible explanation of appellate procedure and terminology, Cornell Law School’s Legal Information Institute provides useful background in its Wex materials on appeals.

---

2. Where Do the Courts of Appeals Fit in the Federal Judiciary?

The ordinary federal judicial hierarchy can be expressed as:

U.S. District Courts → U.S. Courts of Appeals → U.S. Supreme Court

The district courts are primarily trial courts.

The courts of appeals are primarily appellate courts.

The Supreme Court is the highest court in the federal judiciary and has both original and appellate jurisdiction.

This hierarchy allows the federal judiciary to perform different functions at different levels.

The district court develops the factual record.

The court of appeals reviews the lower court’s decision.

The Supreme Court selectively reviews cases presenting issues of exceptional legal or national importance.

The three levels are therefore interconnected, but they are not interchangeable.

---

3. How Many Federal Courts of Appeals Are There?

There are 13 federal courts of appeals.

Twelve are regional circuits:

1. First Circuit
2. Second Circuit
3. Third Circuit
4. Fourth Circuit
5. Fifth Circuit
6. Sixth Circuit
7. Seventh Circuit
8. Eighth Circuit
9. Ninth Circuit
10. Tenth Circuit
11. Eleventh Circuit
12. District of Columbia Circuit

The thirteenth is the:

13. Federal Circuit

The twelve regional circuits are organized primarily according to geography.

The Federal Circuit is different because its jurisdiction is based primarily on particular subject matter rather than geography.

The federal judiciary describes the courts of appeals as appellate courts that review decisions of district courts and notes that the federal system contains 13 courts of appeals.

---

4. Why Are They Called “Circuits”?

The term circuit has historical roots in the American judicial system.

Historically, federal judges traveled around defined geographic areas to conduct judicial proceedings.

The modern circuit courts no longer function in precisely that historical manner, but the terminology remains.

Today, a circuit generally refers to a particular federal appellate jurisdiction.

Thus, when lawyers speak of “the Ninth Circuit,” they may be referring to both:

• the geographic region covered by the Ninth Circuit; and
• the U.S. Court of Appeals responsible for hearing appeals within that region.

Context determines which meaning is intended.

---

5. What Does a Court of Appeals Review?

A court of appeals generally reviews legal and procedural issues arising from lower-court proceedings.

It can examine whether the district court:

• interpreted federal law correctly;
• applied the correct constitutional standard;
• properly instructed the jury;
• admitted or excluded evidence correctly;
• correctly ruled on motions;
• properly calculated a sentence;
• committed a procedural error; or
• otherwise made a legally significant error.

The court may also review certain factual findings, but appellate courts generally give substantial deference to trial courts on factual matters.

This difference reflects the institutional roles of trial and appellate courts.

The trial judge directly hears testimony, sees the witnesses, evaluates evidence, and develops the factual record.

The appellate judges generally review a written record.

The appellate system therefore does not normally give the appellate court the same firsthand opportunity to evaluate evidence.

---

6. An Appeal Is Not a New Trial

One of the most important principles in appellate law is that an appeal is not ordinarily a new trial.

A party cannot usually use an appeal simply to present the same case again and ask a different group of judges to decide which side was more convincing.

Instead, appellate review focuses on whether a legally significant error occurred.

For example, imagine that a jury heard conflicting testimony from two witnesses and believed Witness A rather than Witness B.

A party generally cannot obtain reversal merely by arguing that the appellate judges would have believed Witness B.

The appellate court usually respects the trial court’s or jury’s role in evaluating evidence.

But if the trial judge applied the wrong legal rule to the evidence, that may present a genuine appellate issue.

The distinction between fact-finding and legal review is therefore fundamental.

---

7. Who Can Appeal?

Not every person who dislikes a judicial decision can appeal it.

Generally, a party must have a legally recognized basis for appellate review.

A party may be able to appeal an adverse final judgment or another appealable order.

In federal civil litigation, this often means a party must have suffered an adverse judicial ruling that is appealable under federal law.

In criminal cases, the defendant may appeal qualifying convictions or sentences, while the government’s ability to appeal is constrained by constitutional and statutory limitations.

The existence of a disagreement with the trial judge is not, by itself, enough.

Appellate jurisdiction must exist.

---

8. Final Decisions and Interlocutory Appeals

Federal appellate jurisdiction generally focuses on final decisions.

A final decision ordinarily resolves the case or the relevant claims in a way that leaves nothing further for the district court to do concerning the matter.

This principle helps prevent litigation from being interrupted by appeals every time the district judge issues an intermediate ruling.

There are, however, important exceptions.

Federal law permits certain interlocutory appeals and other forms of immediate appellate review.

For example, particular injunction orders may be immediately appealable under federal law.

The rules governing appellate jurisdiction are therefore more complicated than the simple statement that “you can appeal after losing.”

---

9. How Does an Appeal Begin?

An appeal generally begins with the filing of a notice of appeal in the appropriate district court.

The notice identifies the decision being appealed and initiates the appellate process.

Strict deadlines apply.

Missing an appellate deadline can have serious consequences, including potentially losing the right to appellate review.

After the notice is filed, the case moves into the appellate process.

The record is prepared.

The parties submit briefs.

The court may schedule oral argument.

A panel of appellate judges considers the case.

The court then issues its decision.

The precise procedural requirements depend on the type of case and the applicable federal appellate rules and local rules.

---

10. The Record on Appeal

The record is central to appellate review.

The record contains the materials necessary for the appellate court to understand what happened in the lower court.

Depending on the case, it can include:

• pleadings;
• motions;
• exhibits;
• transcripts;
• orders;
• jury instructions;
• admitted evidence;
• rulings;
• and the final judgment.

The appellate court generally does not receive an entirely new body of evidence.

This is one reason lawyers must make appropriate arguments and preserve objections in the district court.

An issue that was never properly presented below may face additional obstacles on appeal.

---

11. Appellate Briefs

Written briefs are the principal method through which parties present their appellate arguments.

A brief explains:

• what happened;
• what legal issue is presented;
• what the lower court decided;
• why that decision was allegedly wrong;
• what legal authorities support the argument; and
• what relief the party is requesting.

Appellate briefs are generally much more focused on legal reasoning than ordinary factual narratives.

The lawyer must identify a specific legal error and support the argument with statutes, constitutional provisions, precedent, rules, and other authoritative sources.

An appellate court is not simply looking for the most sympathetic party.

It is looking for a legally cognizable basis for appellate relief.

---

12. The Appellee’s Response

The party defending the district court’s decision is generally called the appellee.

The appellant files the opening brief.

The appellee then responds.

The appellee may argue that:

• the district court applied the law correctly;
• the appellant waived the argument;
• the alleged error was harmless;
• the appellate court lacks jurisdiction;
• the factual finding should receive deference;
• or the judgment should be affirmed for another legal reason.

The appellant may then have an opportunity to file a reply brief.

The briefing process allows both sides to present detailed legal arguments before the appellate judges decide the case.

---

13. Oral Argument

Some appellate cases are decided entirely on the written briefs.

Others receive oral argument.

During oral argument, lawyers appear before a panel of appellate judges and answer questions.

Oral argument is not normally a dramatic speech in which lawyers simply repeat everything contained in their briefs.

Appellate judges frequently interrupt counsel with questions.

They may ask:

• What is your strongest legal authority?
• What happens if we accept your interpretation?
• Where in the statute do you find that rule?
• Why should we reject the opposing precedent?
• Was this argument preserved below?
• What standard of review applies?
• What remedy are you asking us to provide?

The ability to respond directly to judicial questioning is an important part of appellate advocacy.

---

14. Appellate Panels

Unlike a typical district-court trial, an appeal is ordinarily heard by a panel of judges.

A typical federal appellate panel consists of three judges.

The judges review the briefs and record and hear oral argument when scheduled.

Afterward, they deliberate and decide the case.

The use of panels allows multiple judges to participate in appellate decision-making while making it possible for the courts to process large numbers of appeals.

The judges do not normally sit as a full court for every appeal.

---

15. En Banc Review

Under special circumstances, a federal court of appeals may rehear a case en banc.

“En banc” means that the case is considered by a larger group of judges of the circuit rather than the ordinary three-judge panel.

En banc review is relatively unusual.

It may be appropriate when a case involves an exceptionally important question or when reconsideration of existing circuit precedent is necessary.

The precise composition and procedures vary somewhat among circuits.

En banc proceedings demonstrate that the court of appeals is itself an institution capable of reconsidering important legal questions.

---

16. The Chief Judge

Each federal court of appeals has a chief judge.

The chief judge performs important administrative and institutional responsibilities in addition to participating in judicial work.

The chief judge helps oversee the court’s administration and may exercise various responsibilities concerning the operation of the circuit.

The chief judge is not equivalent to the Chief Justice of the United States.

The Chief Justice leads the Supreme Court and also serves as the head of the federal judicial system for certain administrative purposes.

A circuit’s chief judge leads the particular court of appeals.

---

17. Standards of Review

One of the most important concepts in appellate law is the standard of review.

The standard of review determines how closely the appellate court examines the lower court’s decision.

Different questions receive different standards.

For example:

Questions of law

Questions of law are generally reviewed de novo.

This means the appellate court considers the legal issue independently rather than deferring to the district judge’s legal conclusion.

Findings of fact

Factual findings are generally reviewed under a more deferential standard, often the clearly erroneous standard in civil cases.

Discretionary decisions

Certain decisions are reviewed for abuse of discretion.

The precise standard depends on the type of ruling being challenged.

The standard of review can therefore determine how difficult it is for an appellant to obtain reversal.

---

18. De Novo Review

De novo means “anew” or “from the beginning.”

When an appellate court reviews a purely legal question de novo, it does not simply ask whether the district judge’s interpretation was reasonable.

Instead, the appellate court independently determines the correct legal interpretation.

For example, if a district court interprets a federal statute and the issue is purely one of statutory interpretation, the court of appeals will ordinarily review that legal conclusion de novo.

This does not mean the appellate court conducts a new trial.

It means the legal question receives independent appellate review.

---

19. Clear Error Review

Factual findings receive greater deference.

Under the clearly erroneous standard applicable in many civil appeals, an appellate court will not ordinarily reverse merely because it might have reached a different factual conclusion.

The trial judge had the opportunity to hear testimony and examine the evidence directly.

An appellate court reviewing a written record lacks that same firsthand experience.

Accordingly, factual findings are generally more difficult to overturn than legal conclusions.

This reflects the institutional division between trial courts and appellate courts.

---

20. Abuse of Discretion

Some decisions are entrusted to the district judge’s discretion.

Examples can include certain decisions involving:

• case management;
• evidentiary matters;
• discovery;
• sanctions;
• scheduling; and
• equitable remedies.

When such a decision is challenged, the appellate court may apply an abuse of discretion standard.

This gives the trial judge a degree of flexibility.

The appellate court does not simply substitute its preferred decision for the district judge’s decision.

Instead, it asks whether the lower court’s decision fell outside the permissible range of judicial discretion or was based on an improper legal or factual foundation.

---

21. Harmless Error

Not every legal error requires reversal.

An appellate court may conclude that an error was harmless.

This reflects a practical principle: courts generally do not overturn judgments for insignificant mistakes that did not materially affect the outcome.

The precise harmless-error standard depends on the nature of the case and the type of error involved.

For example, a minor procedural mistake that had no meaningful effect on the result may not justify a new trial.

By contrast, a fundamental constitutional error that affected the fairness of the proceeding may have much greater consequences.

---

22. What Can a Court of Appeals Do?

After reviewing a case, an appellate court can potentially:

• affirm the lower court’s decision;
• reverse the decision;
• vacate the decision;
• remand the case for further proceedings; or
• take another authorized action.

An affirmance means the lower court’s decision is upheld.

A reversal means the appellate court determines that the lower court reached an incorrect result on the issue being reviewed.

A vacatur sets aside the challenged decision or portion of it.

A remand sends the case back to the lower court for further proceedings consistent with the appellate court’s decision.

These outcomes can also be combined.

For example, a court of appeals might affirm one portion of a judgment, reverse another portion, and remand the case for additional proceedings.

---

23. What Does “Remand” Mean?

A remand means that the appellate court sends the case back to the lower court.

The appellate court may do this because additional proceedings are necessary.

For example, the appellate court may determine that the district court applied the wrong legal standard and instruct the district court to reconsider the matter under the correct standard.

A remand does not necessarily mean that the appellant has won everything.

The appellate court may provide specific instructions concerning what the district court must do next.

The district court then continues the case consistently with the appellate decision.

---

24. What Happens When the Court of Appeals Affirms?

If the court of appeals affirms the district court’s judgment, the lower court’s decision generally remains in effect.

The losing party may potentially seek further review by the U.S. Supreme Court.

However, Supreme Court review is generally discretionary.

The Supreme Court does not automatically hear appeals from the federal courts of appeals.

A party ordinarily must petition for a writ of certiorari and persuade the Supreme Court that the case warrants review.

---

25. What Happens When the Court of Appeals Reverses?

If the court of appeals reverses the district court, the consequences depend on the nature of the ruling.

The appellate court may direct the district court to enter a particular judgment.

Alternatively, it may remand the case for additional proceedings.

For example, the court of appeals might determine that a district court improperly dismissed a claim and instruct it to allow the case to proceed.

In another case, the appellate court might determine that the legal standard used at trial was incorrect and order a new proceeding.

The exact effect of reversal depends on the appellate court’s judgment and instructions.

---

26. Binding Precedent

One of the most important functions of federal courts of appeals is the creation of binding precedent within their circuits.

When a court of appeals authoritatively interprets federal law, lower federal courts within that circuit generally must follow the appellate court’s controlling decisions.

This is sometimes described as vertical stare decisis.

For example, a federal district court located within the Ninth Circuit is generally bound by controlling Ninth Circuit precedent.

The district court may not simply choose to apply the law of another circuit because it prefers that interpretation.

This hierarchical structure promotes consistency.

---

27. Persuasive Authority From Other Circuits

A court of appeals is generally not bound by the decisions of another circuit.

Suppose the Fifth Circuit interprets a federal statute one way and the Seventh Circuit interprets it another way.

The Fifth Circuit does not ordinarily have to follow the Seventh Circuit.

The Seventh Circuit does not ordinarily have to follow the Fifth Circuit.

However, the other circuit’s decision may be persuasive authority.

Judges may consider its reasoning and decide whether to adopt a similar interpretation.

This independence allows different circuits to develop legal doctrine while creating the possibility of conflicting interpretations.

---

28. Circuit Splits

When federal circuits reach conflicting interpretations of the same federal legal issue, a circuit split can arise.

Circuit splits can be significant because federal law may operate differently in different geographic regions.

For example, a federal statute might be interpreted differently in the Second Circuit and the Ninth Circuit.

This can create uncertainty for:

• individuals;
• businesses;
• federal agencies;
• criminal defendants;
• attorneys; and
• lower courts.

A significant circuit split can eventually become a reason for the Supreme Court to accept a case.

The Supreme Court can then provide a nationally controlling interpretation.

---

29. The D.C. Circuit

The U.S. Court of Appeals for the District of Columbia Circuit is one of the most influential federal appellate courts.

It is geographically small but institutionally significant.

The D.C. Circuit hears many cases involving the federal government and federal administrative agencies.

Its location in Washington, D.C., places it near the federal institutions whose actions frequently become subjects of litigation.

The D.C. Circuit has therefore developed a particularly important body of administrative and constitutional law.

Its decisions can have substantial national significance even though its geographic jurisdiction is comparatively limited.

---

30. The Federal Circuit

The U.S. Court of Appeals for the Federal Circuit is unique among the federal appellate courts.

It has nationwide jurisdiction over particular categories of cases.

Its jurisdiction includes significant areas such as:

• patent law;
• certain intellectual property appeals;
• international trade matters;
• claims against the federal government within its statutory jurisdiction; and
• other specialized matters assigned by Congress.

Unlike the regional circuits, the Federal Circuit is not defined primarily by geography.

A case within the Federal Circuit’s statutory subject-matter jurisdiction can reach that court regardless of where in the United States the underlying dispute originated.

This makes the Federal Circuit particularly important to areas of federal law requiring nationwide appellate uniformity.

---

31. Courts of Appeals and Administrative Agencies

Federal courts of appeals can also review certain decisions of federal administrative agencies.

The precise route of judicial review depends on the statute governing the agency and the type of agency action involved.

Some agency decisions may be reviewed directly by a court of appeals.

Other matters may first proceed through a district court or another administrative process.

The federal appellate courts therefore occupy an important position in administrative law.

They help ensure that federal agencies operate within the legal authority granted to them while respecting the statutory framework governing judicial review.

---

32. Courts of Appeals and Constitutional Questions

Courts of appeals regularly decide constitutional questions.

An appeal may ask whether a statute violates the First Amendment, whether government conduct violates due process, whether a search violated the Fourth Amendment, or whether another constitutional limitation has been breached.

The court of appeals must apply the Constitution and controlling Supreme Court precedent.

Because multiple circuits exist, different appellate courts may sometimes reach different conclusions about constitutional questions.

Such disagreements can become particularly important when the issue affects large numbers of people or involves major governmental powers.

---

33. Courts of Appeals and Criminal Cases

The federal courts of appeals hear appeals from federal criminal proceedings conducted in district courts.

A criminal defendant may challenge issues such as:

• the denial of a motion to suppress;
• evidentiary rulings;
• jury instructions;
• constitutional violations;
• sufficiency of the evidence;
• sentencing errors; or
• other legally reviewable issues.

The government may also have limited appellate rights in certain circumstances.

Criminal appeals are governed by specialized rules and constitutional principles.

The appellate court does not ordinarily retry the defendant.

Instead, it reviews the legal and procedural record of the criminal proceeding.

---

34. Sentencing Appeals

Federal criminal appeals frequently involve sentencing.

A defendant may argue that the district court incorrectly calculated the applicable sentencing framework, misunderstood the law, relied on improper information, or imposed an otherwise unlawful sentence.

The applicable standard of review can depend on the specific sentencing issue.

The court of appeals may affirm the sentence, vacate it, or remand for resentencing.

Sentencing appeals demonstrate how appellate review can affect a case even after the defendant has already been convicted.

---

35. Courts of Appeals and Civil Cases

Civil appeals can involve almost every area of federal law.

Examples include:

• constitutional litigation;
• civil rights;
• employment law;
• intellectual property;
• bankruptcy;
• federal taxation;
• securities;
• environmental law;
• administrative law;
• federal statutory claims; and
• qualifying diversity cases.

The appellate court does not generally reconsider every factual detail.

Instead, it identifies the specific issues properly presented for appellate review and applies the appropriate standards.

---

36. Oral Argument Is Not Guaranteed

Not every appeal receives oral argument.

The appellate court may determine that oral argument is unnecessary because the briefs adequately present the issues or because the case can be resolved on the written record.

When oral argument occurs, it can nevertheless be highly valuable.

Judges can test the parties’ legal theories and explore consequences that may not have been fully addressed in the briefs.

Oral argument can therefore influence how judges understand the central legal dispute, even though the written briefs remain essential.

---

37. Written Opinions

After deciding an appeal, the court may issue a written opinion explaining its reasoning.

The opinion may:

• establish a new legal rule;
• clarify existing precedent;
• distinguish earlier cases;
• interpret a federal statute;
• resolve a constitutional question;
• explain why the district court was affirmed or reversed; or
• provide instructions for further proceedings.

Not every appellate disposition is a lengthy published opinion.

Some cases are resolved through shorter orders or other forms of disposition.

The precedential effect of an appellate decision can depend on the applicable rules and the form of the decision.

---

38. Majority, Concurring, and Dissenting Opinions

An appellate decision may involve several judicial opinions.

A majority opinion states the reasoning supported by the required majority of participating judges.

A concurring opinion agrees with the result but offers additional or different reasoning.

A dissenting opinion disagrees with the majority’s decision.

Concurring and dissenting opinions do not ordinarily have the same binding precedential authority as the majority opinion.

They can nevertheless be important.

A dissent may identify weaknesses in the majority’s reasoning, propose an alternative interpretation, or provide a foundation for future reconsideration.

---

39. Publication and Precedent

Federal appellate courts distinguish between decisions that are published or otherwise precedential and decisions that may have limited or different precedential status under the circuit’s rules.

This distinction matters.

Not every appellate decision has identical legal authority.

Lawyers therefore must determine whether an opinion is binding precedent, persuasive authority, or subject to limitations under the applicable circuit rules.

The federal appellate system is consequently more nuanced than the simple rule that “every appellate decision binds everyone.”

---

40. The Relationship Between Appellate and Trial Judges

The courts of appeals supervise the legal work of district courts through appellate review.

This does not mean that appellate judges are simply “superior trial judges.”

The two levels have different institutional responsibilities.

District judges are positioned to develop facts and manage trials.

Appellate judges focus primarily on legal errors and the proper application of law.

A court of appeals may therefore respect a district judge’s factual findings while correcting the district judge’s interpretation of a statute.

This division of institutional roles is essential to the federal judicial system.

---

41. What Does “Error” Mean on Appeal?

An appellant must generally identify a legally significant error.

An unfavorable result is not necessarily evidence of reversible error.

For example, a party might believe that a witness was unconvincing.

That does not necessarily create an appellate issue.

The appellant might instead argue that:

• the judge applied the wrong legal standard;
• the court improperly excluded critical evidence;
• the jury received an incorrect instruction;
• the court violated a constitutional right; or
• the judgment was unsupported under the applicable legal standard.

The appellate process therefore focuses on legally cognizable errors rather than simply dissatisfaction with the outcome.

---

42. Preservation of Issues

A major appellate principle is preservation of error.

Parties are generally expected to raise objections and legal arguments at the appropriate time in the district court.

If a party waits until appeal to raise an issue that could and should have been presented earlier, the appellate court may refuse to consider it or review it only under a more demanding standard.

This principle serves several purposes.

It gives the trial judge an opportunity to correct mistakes.

It prevents parties from deliberately withholding arguments.

And it creates a more efficient appellate process.

Appellate litigation is therefore closely connected to what happened in the district court.

---

43. The Court of Appeals Does Not Usually Receive New Evidence

A party generally cannot decide after losing at trial to introduce new evidence on appeal.

The appellate court ordinarily works from the existing record.

There are limited exceptions and specialized circumstances, but the general principle remains:

The trial court develops the evidence; the appellate court reviews the record.

This is one of the clearest distinctions between trial and appellate litigation.

---

44. The Supreme Court and the Courts of Appeals

The courts of appeals occupy the middle level of the federal judicial hierarchy.

They are subject to the controlling authority of the U.S. Supreme Court.

When the Supreme Court has decided an issue, lower federal appellate courts must follow the Supreme Court’s controlling precedent.

But when the Supreme Court has not resolved a question, different circuits may develop different approaches.

This makes the courts of appeals essential laboratories of federal legal development.

They resolve thousands of legal questions that never reach the Supreme Court.

---

45. Why Most Appeals End in the Courts of Appeals

The Supreme Court’s docket is intentionally limited.

It receives thousands of petitions for review but accepts only a small fraction of them.

As a result, the courts of appeals provide the final judicial word in the overwhelming majority of federal cases that are appealed.

This makes the courts of appeals extremely important.

A legal rule developed by a circuit may govern federal litigation involving millions of people without ever receiving Supreme Court review.

For many practical purposes, the court of appeals is the final federal judicial authority on a particular issue within its jurisdiction.

---

46. What Happens After the Court of Appeals Decides?

After an appellate decision, several possibilities exist.

The court may:

• affirm the judgment;
• reverse it;
• vacate it;
• remand it;
• issue further instructions; or
• take another authorized action.

The losing party may potentially seek rehearing in the circuit.

In appropriate cases, the party may petition the U.S. Supreme Court for certiorari.

But Supreme Court review is not automatic.

The Supreme Court generally chooses which cases to hear.

This means that an appellate decision may become the final resolution of the dispute.

---

47. Why the Courts of Appeals Matter

The federal courts of appeals perform three central functions.

First, they correct errors made by federal trial courts.

Second, they develop and clarify federal law.

Third, they create binding precedent within their circuits.

These functions make the courts of appeals indispensable to the rule of law.

Without appellate review, trial-court mistakes could remain uncorrected.

Without appellate precedent, federal law could become significantly less predictable.

Without independent appellate judges, the consistency and legitimacy of the federal judicial system would be weakened.

---

48. The Federal Appellate System and Legal Uniformity

The federal appellate system must balance two competing values.

One is uniformity.

Federal law should ideally mean the same thing throughout the United States.

The other is independent judicial development.

Different circuits should be able to reason independently about difficult legal questions rather than being forced into premature nationwide uniformity.

The existence of multiple circuits accommodates both values.

Different courts can develop competing interpretations.

The Supreme Court can intervene when national uniformity becomes sufficiently important.

This structure allows federal law to evolve through a combination of regional appellate decisions and selective national review.

---

49. A Simple Example of Appellate Review

Imagine that a federal district court dismisses a plaintiff’s federal civil-rights claim.

The plaintiff believes the district judge interpreted the applicable federal statute incorrectly.

The plaintiff files a timely notice of appeal.

The appellate record is prepared.

The plaintiff files an appellate brief explaining the alleged legal error.

The defendant responds.

The appellate judges review the record and the parties’ arguments.

The court may schedule oral argument.

The judges then decide whether the district court applied the law correctly.

If the court concludes that the district court was correct, it affirms.

If it concludes that the district court made a reversible legal error, it may reverse or vacate the judgment and remand the case for further proceedings.

The appellate court has therefore not conducted a second trial.

It has reviewed the legality of the lower court’s decision.

---

50. A Simple Example of a Criminal Appeal

Imagine that a defendant is convicted in federal district court.

The defendant believes that the district court improperly admitted evidence in violation of the Fourth Amendment.

The defendant appeals.

The court of appeals examines the record concerning the search and seizure.

It applies the appropriate standard of review.

If the appellate court concludes that the evidence was improperly admitted and that the error was sufficiently significant to require relief, it may reverse the conviction or order another appropriate remedy.

If it concludes that the district court acted lawfully, it may affirm.

Again, the appellate court is reviewing the legality of the proceeding rather than conducting a new criminal trial.

---

51. The Courts of Appeals as Constitutional Institutions

The federal courts of appeals are not merely administrative review bodies.

They are constitutional courts exercising federal judicial power.

Their judges are Article III judges.

Their decisions can determine the meaning of constitutional provisions, federal statutes, treaties, and other sources of federal law.

Their work therefore has constitutional significance.

At the same time, their authority is limited by higher law, including the U.S. Constitution, federal statutes, and controlling Supreme Court precedent.

---

52. The Practical Importance of Knowing Your Circuit

For lawyers and litigants, identifying the correct federal circuit can be extremely important.

A legal issue may have one controlling rule in one circuit and a different rule in another.

The same federal statute can therefore produce different litigation outcomes depending on the geographic or subject-matter jurisdiction involved.

This is why federal lawyers routinely research the precedent of the relevant circuit.

A legal argument that is persuasive in one circuit may be ineffective in another.

The identity of the court of appeals is therefore not merely an organizational detail.

It can materially affect the law applicable to a case.

---

53. The U.S. Courts of Appeals in the Larger Federal System

The federal appellate courts connect trial-level adjudication with national constitutional authority.

The district courts resolve individual disputes.

The courts of appeals review those decisions and develop regional federal precedent.

The Supreme Court resolves selected issues of national importance.

This arrangement creates a judicial system in which most cases can be resolved without requiring every dispute to reach the nation’s highest court.

The courts of appeals therefore provide both review and legal development.

They are simultaneously error-correcting institutions and major sources of federal law.

Key Takeaways

1. The U.S. Courts of Appeals are the principal intermediate appellate courts of the federal judiciary.
2. There are 13 federal courts of appeals.
3. Twelve circuits are primarily geographic, while the Federal Circuit has specialized nationwide jurisdiction.
4. Courts of appeals generally review decisions from federal district courts rather than conducting new trials.
5. An appeal ordinarily relies on the record developed in the lower court.
6. The principal tools of appellate advocacy include briefs, legal authority, and, in some cases, oral argument.
7. Most federal appellate cases are heard by three-judge panels.
8. A circuit may hear an exceptionally important case en banc.
9. Different legal questions receive different standards of review.
10. Questions of law are generally reviewed de novo.
11. Many factual findings receive substantial appellate deference.
12. Certain discretionary decisions are reviewed for abuse of discretion.
13. Not every error requires reversal; some errors may be considered harmless.
14. A court of appeals may affirm, reverse, vacate, or remand a lower-court decision.
15. Federal appellate courts create binding precedent within their respective circuits.
16. One circuit is generally not bound by another circuit’s decisions, although decisions from other circuits may be persuasive.
17. Conflicting circuit decisions can create a circuit split.
18. The D.C. Circuit has particular importance in litigation involving the federal government and administrative agencies.
19. The Federal Circuit has nationwide jurisdiction over specified subject-matter categories, including important areas of patent law.
20. Courts of appeals can review certain decisions involving federal administrative agencies.
21. Appellate courts can decide significant constitutional questions.
22. Federal criminal convictions and sentences can be subject to appellate review.
23. Preservation of issues is important because parties generally must raise legal arguments and objections at the appropriate stage in the district court.
24. The Supreme Court does not automatically review decisions of the courts of appeals.
25. Because the Supreme Court hears only a small percentage of cases, the courts of appeals are often the final federal judicial authority on disputed legal questions within their circuits.

Frequently Asked Questions

What is a U.S. Court of Appeals?

A U.S. Court of Appeals is a federal appellate court that reviews qualifying decisions of federal district courts and, in certain circumstances, federal administrative agencies and other governmental bodies.

How many U.S. Courts of Appeals are there?

There are 13 federal courts of appeals: 12 regional circuits and the nationwide U.S. Court of Appeals for the Federal Circuit.

What is the difference between a district court and a court of appeals?

A district court is primarily a trial court. It hears evidence, develops the factual record, conducts trials, and initially resolves the case.

A court of appeals is primarily an appellate court. It reviews the lower court’s decision for legal or otherwise reviewable error.

Is an appeal a new trial?

Generally, no. An appeal ordinarily involves review of the record created in the lower court rather than a new presentation of witnesses and evidence.

Can new evidence be introduced on appeal?

Generally, no. Appellate courts ordinarily review the existing record. Limited exceptions may exist depending on the circumstances and governing law.

How does an appeal begin?

A federal appeal generally begins with the timely filing of a notice of appeal in the appropriate district court or, in some circumstances, through another procedure specified by law.

What is an appellate brief?

An appellate brief is a written legal argument explaining why the lower court’s decision should be affirmed, reversed, vacated, or otherwise modified.

Does every appeal have oral argument?

No. Some appeals are decided on the written submissions and record without oral argument.

How many judges hear a federal appeal?

Most federal appeals are heard by a three-judge panel.

What does en banc mean?

En banc review occurs when a case is considered by a larger group of judges of the circuit rather than the ordinary three-judge panel.

What does de novo mean?

De novo review means that the appellate court independently reviews a legal question without giving ordinary deference to the lower court’s legal conclusion.

What is clear-error review?

Clear-error review is a deferential standard generally applied to certain factual findings. The appellate court ordinarily will not reverse merely because it might have reached a different factual conclusion.

What does abuse of discretion mean?

Abuse of discretion is a standard used for certain discretionary decisions. The appellate court generally does not substitute its judgment simply because it would have chosen differently; it examines whether the lower court exceeded the permissible range of discretion or relied on an improper basis.

What does it mean when an appellate court affirms?

An affirmance means the appellate court upholds the lower court’s decision.

What does it mean when an appellate court reverses?

A reversal means that the appellate court determines that the lower court made an error requiring a different result on the issue being reviewed.

What does remand mean?

A remand means that the appellate court sends the case back to the lower court for further proceedings consistent with the appellate court’s decision.

What is a circuit split?

A circuit split occurs when different federal courts of appeals reach conflicting interpretations of the same federal legal issue.

Why are circuit splits important?

They can cause federal law to operate differently in different parts of the country and may eventually provide a reason for the Supreme Court to review the issue.

Are courts of appeals bound by each other’s decisions?

Generally, no. A federal court of appeals is normally bound by controlling Supreme Court precedent and its own circuit’s applicable precedent, but it is not ordinarily bound by another circuit’s decisions.

Are district courts bound by courts of appeals?

Yes. Federal district courts generally must follow controlling precedent from the court of appeals governing their geographic circuit.

Can a court of appeals decide constitutional questions?

Yes. Federal courts of appeals regularly decide constitutional questions that arise in cases properly before them, subject to controlling Supreme Court precedent.

Can a federal court of appeals review a criminal conviction?

Yes. Federal criminal convictions and sentences can be appealed under applicable federal law and procedural rules.

Can the government appeal a criminal case?

The government’s ability to appeal in a criminal case is subject to constitutional and statutory limitations. It does not possess an unlimited right to appeal every adverse ruling.

Does the Supreme Court have to hear an appeal from a federal circuit court?

No. Supreme Court review is generally discretionary. A party ordinarily must petition for a writ of certiorari, and the Court decides whether to grant review.

Why are the courts of appeals so important?

Because they perform most federal appellate review and establish binding precedent within their circuits, the courts of appeals resolve the vast majority of federal appellate disputes without Supreme Court intervention. Their decisions therefore shape federal law throughout the United States.