What Is Plaintiff vs. Defendant?
In a civil lawsuit, the plaintiff is the person who files the suit and claims to have been harmed; the defendant is the person being sued. In criminal cases, the 'plaintiff' equivalent is the prosecution (the government), and the defendant is the accused.
Quick Answer
In a civil lawsuit, the plaintiff is the person who files the suit and claims to have been harmed; the defendant is the person being sued. In criminal cases, the 'plaintiff' equivalent is the prosecution (the government), and the defendant is the accused.
Full Explanation
Plaintiff and defendant are the two main parties in a lawsuit. The plaintiff is the party who initiates the lawsuit by filing a complaint with the court, alleging that the defendant harmed them and seeking a remedy. The defendant is the party against whom the lawsuit is brought and who must respond to the allegations.
In civil cases, the plaintiff sues voluntarily, seeking compensation (money damages) or equitable relief (like an injunction). The plaintiff bears the burden of proving their case by a preponderance of the evidence. If the defendant has counterclaims against the plaintiff, they become a 'counter-plaintiff' on those claims.
In criminal cases, the government (not the victim) is the party that brings charges. Cases are captioned 'State v. Defendant,' 'United States v. Defendant,' or 'People v. Defendant.' The victim is typically a witness, not a party, though victims' rights laws in many states give victims certain rights in the process.
In appeals, the terminology often changes. The party who appeals is called the 'appellant' (or 'petitioner' in some courts), and the responding party is the 'appellee' (or 'respondent'). In some courts — particularly in published opinions — the parties' roles at trial determine how their names appear in the case caption, which is why appellate decisions sometimes list the original plaintiff as the second-named party.
In class actions, a small number of 'named plaintiffs' represent a larger class of similarly situated people.
Real-World Example
McDonald's coffee case: Stella Liebeck was the plaintiff who sued McDonald's (the defendant) after suffering severe burns from spilled coffee. She alleged negligence — that the coffee was served at an unreasonably dangerous temperature. McDonald's was the defendant who disputed liability and damages.
In Brown v. Board of Education, Oliver Brown (and other parents) were the plaintiffs who challenged the Topeka, Kansas school board (the defendant). The case was consolidated with four other cases, and the Supreme Court's landmark ruling ended legal school segregation.
Why It Matters for Law Students
These are foundational vocabulary terms in the legal system. Knowing the difference between plaintiff and defendant — and how those roles shift in appeals and criminal cases — is essential for reading cases, writing briefs, and understanding court proceedings.