U.S. Court of Appeals for the Federal Circuit
The U.S. Court of Appeals for the Federal Circuit, created by the Federal Courts Improvement Act of 1982, is the only federal court of appeals with subject-matter jurisdiction defined principally by the kind of case rather than the geographic origin of the appeal. It hears all appeals from final decisions of the federal district courts in patent cases under 28 U.S.C. § 1295, along with appeals from the Patent Trial and Appeal Board, the International Trade Commission, the Court of Federal Claims, the Merit Systems Protection Board, and several other tribunals. Its decisions, sitting in panels and occasionally en banc, supply most of the working law of patent litigation.
Overview
Congress created the Federal Circuit in 1982 by merging the U.S. Court of Customs and Patent Appeals with the appellate division of the U.S. Court of Claims. The motivating purpose was to bring uniformity to patent law, which had previously been heard by all twelve regional circuits and had developed significant inter-circuit splits — particularly on the standards for validity and on appellate review of damages. Section 1295 of Title 28 vests the new court with exclusive jurisdiction over appeals "in any civil action arising under, or in any civil action in which a party has asserted a compulsory counterclaim arising under, any Act of Congress relating to patents."
The court sits in Washington, D.C., at the Howard T. Markey National Courts Building near Lafayette Square, although it occasionally hears arguments at law schools and other locations. Its statutory authorization is for twelve active circuit judges; senior judges and judges sitting by designation supplement panels. As of recent practice, the active bench has fluctuated near that statutory number, with several seats periodically vacant pending nomination and confirmation.
Beyond patents, the Federal Circuit hears appeals in trademark cases from the Trademark Trial and Appeal Board, government contracts, federal employee personnel matters, veterans' benefits, certain tax refund claims, and international trade cases. In patent law, however, its jurisdiction is exclusive: every patent appeal in the federal system, regardless of the district of origin, comes to the Federal Circuit.
Local rules and panel composition
The court applies the Federal Rules of Appellate Procedure as supplemented by the Federal Circuit Rules. Distinctive features include:
- Three-judge panels. Cases are decided by panels of three judges drawn from the active and senior membership, with assignments made by the clerk's office under standing protocols. Panels sit several days per month for argument, with the calendar published in advance.
- En banc procedures. The full court may rehear a case en banc on its own motion or on a party's petition. Rehearing en banc is granted sparingly and typically only when intra-circuit conflict, an exceptional question, or a decision in tension with Supreme Court precedent is presented. The court has at times limited en banc review to specific questions, calling for supplemental briefing on those questions only.
- Rule 36 affirmances. The court may affirm a judgment without opinion under Federal Circuit Rule 36, particularly when the appeal raises no precedential question. Rule 36 affirmances do not constitute precedent.
- Nonprecedential opinions. The court issues both precedential and nonprecedential opinions; nonprecedential opinions may be cited but lack binding force.
Typical scheduling
A typical patent appeal moves on the following schedule from notice of appeal to decision:
- Notice of appeal within 30 days of judgment (60 days if the United States is a party); docketing in the Federal Circuit shortly thereafter.
- Appellant's principal brief within 60 days of docketing; appellee's response within 40 days; appellant's reply within 14 days. Joint appendix and amicus briefs follow the briefing schedule.
- Argument calendared after briefing closes, typically several months later. Argument times default to fifteen minutes per side and are tightly enforced.
- Decision issued generally within several months of argument, though the timing varies.
The total appeal cycle from final judgment to opinion is commonly twelve to eighteen months, though complex cases or those resulting in en banc review may run longer. Appeals from the PTAB and the ITC follow similar schedules with their own procedural particulars.
Notable practices
Standards of review
The Federal Circuit applies a defined matrix of review standards that practitioners must master:
- Claim construction is reviewed de novo as a question of law, with subsidiary findings of fact concerning extrinsic evidence reviewed for clear error. Teva Pharmaceuticals USA, Inc. v. Sandoz, Inc., 574 U.S. 318 (2015).
- Anticipation is a question of fact reviewed for substantial evidence (jury) or clear error (bench).
- Obviousness is a question of law based on underlying factual findings (the Graham factors), reviewed accordingly.
- Section 101 patent eligibility is a question of law, with subsidiary factual findings under the second step of the Alice framework reviewed for clear error or substantial evidence.
- Written description and enablement are questions of fact.
- Definiteness is a question of law with underlying factual findings.
- Discretionary rulings — including exceptional case findings under § 285, sealing, and case-management decisions — are reviewed for abuse of discretion.
- Damages findings are reviewed for substantial evidence; legal standards for reasonable-royalty testimony are reviewed de novo.
Mandamus
The Federal Circuit's mandamus jurisdiction under the All Writs Act is most prominently exercised in transfer-of-venue cases under 28 U.S.C. § 1404(a). The court has issued a series of decisions reviewing district court rulings in the Eastern and Western Districts of Texas — including In re Apple Inc., 979 F.3d 1332 (Fed. Cir. 2020), In re Samsung Electronics Co., 2 F.4th 1371 (Fed. Cir. 2021), and In re TracFone Wireless, Inc., 28 F.4th 1242 (Fed. Cir. 2022) — that have shaped the convenience analysis applied below. Mandamus also issues, less frequently, on disqualification, sealing, and discovery orders that present "exceptional" questions.
Choice of law
The court applies its own law to issues of patent law and the law of the regional circuit on procedural matters not unique to patent cases (for example, attorney-client privilege questions arising in district court). Identifying the correct body of law for a given issue is a recurring threshold problem on appeal.
Recent doctrinal pressure points
Several areas have been particularly active. Section 101 jurisprudence — applying the two-step Alice/Mayo framework — continues to generate frequent panel opinions, occasional en banc consideration, and persistent calls for Supreme Court guidance. PTAB review has produced a developing body of law on IPR estoppel, the scope of appellate review under 35 U.S.C. § 314(d) following Cuozzo, and the propriety of various PTAB practices addressed in SAS Institute, Arthrex, and their progeny. Venue mandamus remains an active area as district practice in Texas and elsewhere continues to evolve.
Damages doctrine has seen sustained attention to apportionment, the entire-market-value rule, and the proper structure of reasonable-royalty opinion testimony, with substantial follow-on litigation after Supreme Court decisions in WesternGeco, Halo v. Pulse, and Octane Fitness v. ICON.
Across these areas, the court works under particular pressure from Supreme Court review. The Supreme Court has reversed or significantly modified Federal Circuit doctrine in patent cases at a substantial rate over the past two decades, including in KSR, eBay, Alice, TC Heartland, and others.
Practical notes for first-time practitioners
- Identify the standard of review for every issue. The Federal Circuit's standards-of-review matrix is the architecture of every appellate brief; framing the issue against the right standard is half the work.
- Read the Federal Circuit Rules alongside the Federal Rules of Appellate Procedure. The local rules govern joint appendix preparation, confidential information, page limits, and addendum requirements that materially affect briefing.
- Argument is short and demanding. Default fifteen minutes per side, with active questioning. Prepare a concise opening but expect to spend most of the time responding to the panel.
- Mandamus is exceptional. The standard requires no adequate remedy on appeal, a clear and indisputable right, and circumstances making issuance appropriate. Successful mandamus petitions develop the record on these elements specifically.
- Track en banc activity. The court occasionally calls for supplemental briefing or sua sponte en banc review on particular questions; standing alerts to opinions in your subject area are worth maintaining.
- Distinguish precedential and nonprecedential opinions in citation. Rule 36 affirmances and nonprecedential opinions have specific citation conventions; misuse can draw a panel's attention.
See also
- Federal Circuit appealsProcedure for taking and briefing appeals.
- Standards of reviewQuick reference table for issue-by-issue review standards.
- Eastern District of TexasFrequent source of transfer mandamus.
- Western District of Texas (Waco)Source of In re Apple, In re TracFone, and related mandamus.
- Markman v. WestviewFoundational claim construction case.
- Phillips v. AWHEn banc framework for claim construction.
- KSR v. TeleflexSupreme Court reversal on obviousness.
- Alice v. CLS BankSection 101 framework.
- PTABMajor appellate caseload from PTAB final written decisions.
Last reviewed: 2026