Filing a government brief in federal court means meeting the same structural, formatting, and deadline rules that bind every other litigant, plus a layer of internal authorization that private parties never deal with. The core government brief filing requirements come from Federal Rules of Appellate Procedure 28 and 32 for appellate work, Supreme Court Rule 37 for amicus filings at the high court, and each court’s local rules on top of that. Miss a word limit, a cover color, or a seven-day amicus deadline at the Supreme Court, and the clerk can mark your submission “received but not filed,” which is not the same as filed.
What Counts as a Government Brief
Which rules apply depends on how the government is appearing in the case. There are three main postures.
A party brief is what the government files when it is the plaintiff or defendant: opening, response, and reply briefs at trial and on appeal. Federal criminal prosecutions and civil enforcement actions are the common examples.
An amicus curiae brief is filed when the government has a stake in a case between other parties. Federal and state governments have an unusual privilege here. They can file amicus briefs in federal appellate courts without the parties’ consent or the court’s leave, and the same automatic right applies at the Supreme Court under Rule 37.1Office of the Law Revision Counsel. Federal Rules of Appellate Procedure Rule 29 – Brief of an Amicus Curiae2Legal Information Institute. Supreme Court Rule 37 – Brief for an Amicus Curiae
A statement of interest is a shorter DOJ submission in private-party cases in federal trial courts, generally used to flag the government’s view on a novel question under a statute DOJ enforces.3U.S. Department of Justice. Statements of Interest It carries less formal structure than an amicus brief but still goes on the docket.
Who Must Authorize the Filing
Before a government brief ever reaches a clerk’s office, it has to be authorized internally. The conduct of federal litigation is reserved to the Department of Justice under the Attorney General’s direction, so federal agencies without independent litigating authority coordinate their court filings through DOJ.4Office of the Law Revision Counsel. 28 USC 516 – Conduct of Litigation Reserved to Department of Justice5U.S. Department of Justice. The Attorney General’s Role as Chief Litigator for the United States
The Solicitor General controls whether the federal government appeals a case or files an amicus brief, and that authority extends to every appellate court, not just the Supreme Court.6U.S. Department of Justice. Appeals In General A U.S. Attorney who wants to appeal, settle after a notice of appeal, or add the government’s voice as amicus has to work through the right DOJ division and up the chain.
Required Sections Under Rule 28
Federal Rule of Appellate Procedure 28 lists what a brief must contain: a table of contents with page references, a table of authorities listing every case, statute, and regulation cited, a jurisdictional statement, a statement of the issues, a statement of the case, a summary of the argument, the argument, and a conclusion.7Legal Information Institute. Federal Rules of Appellate Procedure Rule 28 – Briefs
The jurisdictional statement does more work than many filers expect. It has to cite the specific statutes granting the court authority to hear the case and show the appeal was filed on time. Courts take this seriously because without jurisdiction, nothing else in the brief matters.
Amicus briefs follow a different structure. Instead of a jurisdictional statement, they open with a statement of interest explaining who the filer is and why that filer has relevant expertise or a stake in the case. At the Supreme Court, amicus briefs must add something the parties haven’t already said; a brief that merely repeats the parties’ arguments is treated as a burden rather than a help.2Legal Information Institute. Supreme Court Rule 37 – Brief for an Amicus Curiae
Formatting and Word Count Limits
Rule 32 governs the physical form of federal appellate briefs. Fonts must be proportionally spaced at 14 points or larger, or monospaced at no more than 10½ characters per inch. Margins, binding method, and paper size are all specified in the rule.8Legal Information Institute. Federal Rules of Appellate Procedure Rule 32 – Form of Briefs, Appendices, and Other Papers
Word limits trip up more filers than any other rule. A principal brief in a federal appellate court is capped at 13,000 words. A reply brief is capped at 6,500. The cover page, tables, and certificates of counsel do not count toward the limit. Courts will not allow a brief to exceed those caps without advance permission.8Legal Information Institute. Federal Rules of Appellate Procedure Rule 32 – Form of Briefs, Appendices, and Other Papers
The Supreme Court sets its own limits. A merits-stage amicus brief from a government entity gets 9,000 words, compared to 8,000 for a private amicus. At the certiorari stage, all amicus briefs are capped at 6,000 words. Footnotes count.9Supreme Court of the United States. Memorandum to Those Intending to File an Amicus Curiae Brief
When paper copies are required, cover colors identify the type of brief: blue for appellant, red for appellee, green for amicus, gray for reply, tan for supplemental.8Legal Information Institute. Federal Rules of Appellate Procedure Rule 32 – Form of Briefs, Appendices, and Other Papers The Supreme Court requires 40 booklet-format copies of each brief plus one unbound copy on standard paper.
Deadlines You Cannot Miss
Supreme Court amicus deadlines are rigid and cannot be extended. An amicus brief supporting the petitioner at the certiorari stage is due 30 days after the case is docketed or after the Court calls for a response, whichever is later. At the merits stage, an amicus brief is due seven days after the brief of the party being supported.9Supreme Court of the United States. Memorandum to Those Intending to File an Amicus Curiae Brief
Lower federal courts give more room. Under Federal Rule of Civil Procedure 6, a court may grant an extension for good cause if the request is made before the deadline runs. After the deadline passes, the filer must show excusable neglect, which is a harder standard. If the clerk’s office is physically inaccessible on the last day of a filing period, the deadline rolls to the next accessible business day.10Legal Information Institute. Federal Rules of Civil Procedure Rule 6 – Computing and Extending Time
How and Where to File
Most federal courts take filings through the Case Management/Electronic Case Files system, known as CM/ECF, which accepts PDFs directly into the electronic docket.11United States Courts. Electronic Filing (CM/ECF) Filing requires a PACER account and separate e-filing approval from each court where the attorney intends to appear.12PACER. File a Case
The Supreme Court is the main exception. Briefs there must be filed in paper booklet format, with 40 copies delivered to the clerk’s office. Some federal appellate courts keep paper copy requirements for argued cases. The Fourth Circuit, for example, typically orders four paper copies once a case is calendared for argument.
Every brief must be served on all other parties. In federal appellate courts, proof of service must include the date and method of service, the names of the people served, and their addresses or electronic contact information.13Office of the Law Revision Counsel. Federal Rules of Appellate Procedure Rule 25 – Filing and Service The proof appears at the end of the filed brief, and a missing one is a common reason clerks flag a submission for correction.
What Happens If You Get It Wrong
Courts enforce their rules even against the government. A clerk can refuse to file a non-conforming brief and return it marked “received but not filed.” With a deadline approaching, that distinction matters: a rejected brief is not a filed brief, and the clock does not stop.
If the brief is accepted but still breaks the rules, an opposing party can move to strike it for formatting, length, or content violations. Courts have discretion on those motions and sometimes let a non-conforming brief stand when the opposing side cannot show prejudice. A court may also order the filer to correct and refile within a short window, or disregard the non-compliant portions when deciding the case.