Types of Cases Heard in Federal Court

Federal courts possess limited jurisdiction, meaning they may only hear cases that fall within categories authorized by Article III of the U.S. Constitution and confirmed by Congress through statute. This page explains which types of cases qualify for federal adjudication, how the jurisdictional framework operates in practice, and where the boundary between federal and state court authority lies. Understanding these categories is foundational for anyone navigating the federal judiciary, whether as a litigant, researcher, or legal professional.

Definition and scope

Federal subject-matter jurisdiction is defined primarily by two constitutional pillars: federal question jurisdiction and diversity jurisdiction. Federal question jurisdiction arises under 28 U.S.C. § 1331, which grants district courts original jurisdiction over all civil actions arising under the Constitution, laws, or treaties of the United States. Diversity jurisdiction arises under 28 U.S.C. § 1332, authorizing federal courts to hear disputes between citizens of different states when the amount in controversy exceeds $75,000.

These two jurisdictional bases cover a broad but bounded swath of legal disputes. Cases that do not meet either threshold — or fall outside other congressionally authorized categories such as bankruptcy or admiralty — remain in state court. The Administrative Office of the U.S. Courts publishes annual caseload statistics showing that federal district courts disposed of approximately 370,000 civil and criminal cases in fiscal year 2022, illustrating the substantial but carefully delimited reach of federal jurisdiction.

For a structured overview of how jurisdiction is allocated across the system, the federal court jurisdiction explained resource provides additional context.

How it works

Federal jurisdiction is not self-executing. A party must affirmatively establish that a specific case belongs in federal court before proceeding on the merits. The mechanism differs depending on case type.

Criminal cases reach federal court when the charged offense violates a federal statute — that is, a law enacted by Congress under one of its enumerated constitutional powers, such as the Commerce Clause or the Necessary and Proper Clause. The U.S. Department of Justice, through U.S. Attorneys' offices, initiates federal criminal prosecutions. State crimes prosecuted under state law remain in state court even if they involve similar conduct.

Civil cases enter federal court through one of the following pathways:

1. Federal question — The plaintiff's cause of action is created by or depends on federal law, such as a civil rights claim under 42 U.S.C. § 1983 or a patent infringement claim under 35 U.S.C. § 271.
2. Diversity of citizenship — The parties are citizens of different states, and the amount in controversy exceeds the $75,000 statutory threshold (28 U.S.C. § 1332).
3. Supplemental jurisdiction — A state-law claim is so closely related to a federal claim that both arise from a common nucleus of operative fact, allowing the federal court to hear both (28 U.S.C. § 1367).
4. Removal — A defendant removes a case originally filed in state court to federal court when federal jurisdiction would have been proper at the outset (28 U.S.C. § 1441).

Specialized case types include bankruptcy, which is exclusively federal under 28 U.S.C. § 1334; admiralty and maritime disputes under Article III, Section 2; and claims against the federal government brought under the Federal Tort Claims Act (28 U.S.C. §§ 1346, 2671–2680).

The federal question jurisdiction page and the diversity jurisdiction page each address the operational details of those two primary pathways.

Common scenarios

The following case categories appear with regularity in federal dockets, as reflected in U.S. Courts statistical reporting:

• Federal criminal offenses: Drug trafficking under the Controlled Substances Act, wire fraud under 18 U.S.C. § 1343, immigration violations, firearms offenses, and public corruption prosecutions under the Hobbs Act.
• Civil rights litigation: Claims brought under 42 U.S.C. § 1983 for constitutional violations by state actors, and claims under federal anti-discrimination statutes including Title VII of the Civil Rights Act of 1964 and the Americans with Disabilities Act of 1990.
• Constitutional challenges: Actions seeking to enjoin enforcement of a state or federal law on constitutional grounds, including First Amendment, Fourth Amendment, and Equal Protection challenges. These are addressed in more detail at federal constitutional litigation.
• Intellectual property: Patent, copyright, and trademark disputes, with patent appeals routed exclusively through the U.S. Court of Appeals for the Federal Circuit.
• Bankruptcy proceedings: All voluntary and involuntary bankruptcy petitions filed under Title 11 of the U.S. Code, heard exclusively in the federal bankruptcy courts. The federal bankruptcy court process page covers this category in depth.
• Securities and financial regulation: Civil enforcement actions brought by the Securities and Exchange Commission and private securities fraud litigation under the Private Securities Litigation Reform Act of 1995.
• Immigration disputes: Judicial review of final orders of removal and habeas corpus petitions challenging immigration detention, distinct from proceedings before immigration judges which occur in the Executive Office for Immigration Review (federal immigration court vs. federal courts).

Decision boundaries

The critical distinction is between cases where federal court is mandatory, permissible, or prohibited:

Exclusive federal jurisdiction applies where Congress has expressly stripped state courts of concurrent authority. Bankruptcy, patent law, antitrust claims under the Sherman Act, and securities regulation under the Securities Exchange Act of 1934 fall into this category. A state court cannot adjudicate a Chapter 7 bankruptcy petition regardless of the parties' consent.

Concurrent jurisdiction applies where both federal and state courts have authority to hear the claim. Title VII employment discrimination suits, for example, may be filed in either forum, though administrative exhaustion through the Equal Employment Opportunity Commission is required first under 42 U.S.C. § 2000e-5.

No federal jurisdiction exists where neither a federal question nor diversity is present. A contract dispute between two citizens of the same state involving $50,000 belongs exclusively in state court. Federal courts must dismiss or remand such cases for lack of subject-matter jurisdiction, and unlike personal jurisdiction, parties cannot waive this defect.

The contrast between federal and state court authority is examined at length in federal vs. state courts, while the broader architecture of the federal court system overview provides the structural foundation for understanding where these case categories are actually heard.