In an appeal, the appellant is the party who lost at the trial court and is asking a higher court to review that decision. The appellee is the party who won and is defending the outcome. When comparing appellant vs appellee, the key point is that these labels attach to who is challenging the judgment and who is defending it, not to who was the plaintiff or defendant at trial. Each role carries different deadlines, filing responsibilities, and strategic burdens once the case moves out of the trial court.
Who the Appellant Is and What They Have to Do
The appellant is the party challenging a lower court’s ruling. Being unhappy with the outcome isn’t enough. You have to be directly harmed by it: a judgment entered against you, damages reduced below what you sought, or a ruling that denied you relief you specifically asked for. A party who received everything they wanted at trial has no grounds to appeal, even if they disagree with parts of the judge’s reasoning.
To start an appeal, the appellant files a Notice of Appeal, a short document telling the trial court and the opposing party that review is being sought. In federal civil cases, that notice must be filed within 30 days of the final judgment.1Legal Information Institute. Federal Rules of Appellate Procedure Rule 4 – Appeal as of Right, When Taken State deadlines generally run between 30 and 60 days depending on the jurisdiction. Miss the window and the right to appeal is gone. Courts treat these deadlines as jurisdictional, meaning they have no discretion to forgive a late filing.2Cornell Law School. Federal Rules of Appellate Procedure Rule 3 – Appeal as of Right, How Taken
Filing costs money. In federal courts, the total filing and docketing fee is $605, a $600 docketing fee set by the Judicial Conference plus a $5 statutory fee.3United States Courts. Court of Appeals Miscellaneous Fee Schedule4Office of the Law Revision Counsel. 28 USC 1917 – District Courts, Fee on Filing Notice of or Petition for Appeal State appellate fees vary widely, sometimes reaching several hundred dollars. On top of the fee, the appellant bears the cost of assembling the appendix, a compilation of relevant trial court documents, pleadings, and the judgment being challenged, submitted alongside the briefs.5Legal Information Institute. Federal Rules of Appellate Procedure Rule 30 – Appendix to the Briefs
The appellant also has to be realistic about what an appeal actually is. It isn’t a second trial. You can’t argue that the jury got the facts wrong. Appeals focus on legal errors: the trial judge admitted evidence that should have been excluded, gave the jury incorrect instructions, or misapplied a legal standard. The appellate court works from the written record of what already happened and decides whether the law was applied correctly.
Who the Appellee Is and What They Have to Do
The appellee is the party who won at the trial level and now has to defend that victory. The job is to convince the appellate judges that the lower court got it right, or at least got it close enough. The appellee doesn’t need to prove the trial was flawless. Small procedural hiccups happen in every case. What matters is whether any errors were serious enough to change the outcome. If not, the appellee argues that those errors were “harmless” and the result should stand.
Strategically, the appellee starts with an advantage. Appellate courts presume the trial court’s decision was correct, and the burden falls entirely on the appellant to prove otherwise. The appellee’s brief responds to the specific errors the appellant identified, defends the trial judge’s rulings, and points to evidence in the record that supports the original outcome. If the appellant can’t demonstrate a meaningful legal mistake, the appellate court leaves the judgment where it is.
When the Appellee Needs to File a Cross-Appeal
Sometimes the appellee won overall but is unhappy with a piece of the trial court’s decision. Maybe the judge awarded lower damages than requested, or ruled against the appellee on one of several claims. To change something about the judgment rather than simply defend it, the appellee must file a cross-appeal. Being named the appellee doesn’t by itself let you ask the court to expand your win.
In federal court, a cross-appeal must be filed within 14 days after the first party files their notice of appeal, or within the standard appeal deadline, whichever is later.1Legal Information Institute. Federal Rules of Appellate Procedure Rule 4 – Appeal as of Right, When Taken Missing the deadline waives the right to seek any changes to the judgment. One nuance matters here: if the appellee is satisfied with the result and just wants to offer the appellate court an alternative legal reason to affirm, no cross-appeal is needed. A cross-appeal is required only when you want the judgment itself changed in your favor.
How Plaintiffs and Defendants Turn Into Appellants and Appellees
A frequent source of confusion is the assumption that the plaintiff becomes the appellant and the defendant becomes the appellee. That’s only true when the plaintiff loses at trial and decides to appeal. If the defendant loses, the defendant is the appellant and the plaintiff is the appellee. The labels have nothing to do with who started the lawsuit. They depend entirely on who is dissatisfied with the outcome and who is defending it.
It gets more complicated in cases with multiple claims. A defendant who won on the main claim but lost on a counterclaim might appeal the counterclaim loss, making them the appellant on that issue while the plaintiff becomes the appellee. The same party can even be both appellant and appellee at the same time when cross-appeals are involved, because each side is challenging a different part of the same judgment.
How Deference Shifts the Odds for Each Side
Not all trial court decisions get the same level of scrutiny on appeal. The “standard of review” determines how much deference the appellate court gives to the lower court’s work, and it has an outsized practical effect on who wins. Much of an appeal is really decided here. If the standard is deferential, the appellant faces an uphill climb no matter how strong their arguments feel; if it isn’t, the appellee loses much of the built-in advantage of having won below.
Three standards dominate federal appellate practice:
- De novo. The appellate court owes no deference to the trial court and decides the legal question fresh. This applies to pure questions of law, such as whether a statute covers a particular situation or what a contract clause means. Appellants have their best odds under de novo review because the appellate judges aren’t constrained by what the trial judge thought.
- Clearly erroneous. Used for a trial judge’s factual findings in cases decided without a jury. The appellate court will overturn the finding only if, after reviewing all the evidence, it is left with a “definite and firm conviction that a mistake has been committed.” That’s a deliberately high bar. The trial judge saw the witnesses, heard the testimony, and assessed credibility firsthand.
- Abuse of discretion. The most deferential standard, applied to judgment calls the trial court makes during litigation, such as evidentiary rulings, discovery disputes, or sentencing choices within a statutory range. An appellate court reverses only if the trial judge ignored relevant considerations, relied on improper factors, or made a clear legal error in exercising discretion. Winning under this standard is genuinely difficult.
Identifying which standard applies to each argument is one of the most important parts of appellate strategy. Experienced attorneys structure their briefs around whichever issues give them the most favorable standard, and appellees emphasize the deferential ones every chance they get.
The Briefing Sequence
Appeals are decided primarily on paper, through an exchange of written briefs that lay out each side’s arguments with citations to the trial record and case law. The sequence is rigid, and the deadlines are firm.
The appellant files first, with an opening brief due within 40 days after the record is filed with the appellate court.6Legal Information Institute. Federal Rules of Appellate Procedure Rule 31 – Serving and Filing Briefs This brief identifies the specific legal errors that allegedly occurred and explains, with supporting authority, why those errors require the judgment to be reversed. It must include a statement of the issues, the relevant facts, and a structured legal argument. A general complaint that the trial was unfair won’t do.7Legal Information Institute. Federal Rules of Appellate Procedure Rule 28 – Briefs
The appellee then has 30 days after the appellant’s brief is served to file a response brief addressing those arguments and defending the trial court’s decision.6Legal Information Institute. Federal Rules of Appellate Procedure Rule 31 – Serving and Filing Briefs The appellant may then file a reply brief within 21 days after the appellee’s brief is served. The reply is limited to points raised in the response. It is not a second chance to raise new arguments.7Legal Information Institute. Federal Rules of Appellate Procedure Rule 28 – Briefs
Federal rules cap principal briefs (the opening and response) at 13,000 words, and reply briefs at 6,500 words.8Legal Information Institute. Federal Rules of Appellate Procedure Rule 32 – Form of Briefs, Appendices, and Other Papers Every brief filed under the word-count method must include a certificate of compliance stating the exact count. Throughout the process, the appellant carries the burden of persuasion. If the briefs don’t convince the court that a reversible error occurred, the lower court’s decision stands.
What the Court Can Do With the Case
When the appellate court issues its decision, it takes one of four basic forms, and each affects the appellant and appellee differently:
- Affirm. The appellate court confirms the trial court’s result. The original judgment stands. This is the most common outcome; appellants lose far more often than they win. The appellee walks away with the win intact.
- Reverse. The appellate court overturns the trial court’s judgment. The winner below becomes the loser. This is what the appellant is hoping for.
- Remand. The appellate court sends the case back to the trial court for further proceedings, often with instructions about what needs to be corrected or reconsidered. Neither side gets a final answer yet.
- Vacate. The appellate court wipes out the lower court’s decision entirely, as though it never happened. Vacatur is often paired with a remand so the trial court can start fresh on the affected issues.
In cases with multiple claims or parties, the court can mix these outcomes, affirming on some issues, reversing on others, and remanding the rest. The final opinion explains which arguments succeeded, which failed, and why, so each side knows exactly which parts of their fight they won and which they lost.