What is a complaint?
A complaint is the initial document filed by a plaintiff to start a lawsuit, stating the claims and the relief sought.
A complaint is the document that starts a lawsuit and states the claims.
Where the word "Complaint" comes from
Complaint comes from the Latin complangere, to lament or complain. It is the pleading that opens a civil case, setting out the parties, the facts, the legal claims, and the damages or other relief demanded.
Why Complaint matters
The complaint frames the entire lawsuit, because the defendant responds to it and the case is limited to the claims it states. Courts also require the complaint to contain enough facts to show a plausible claim, a standard refined by modern pleading decisions.
Common confusion about Complaint
A complaint is not proof. It is an assertion of claims, and the allegations must be proven later, so a detailed complaint does not mean the plaintiff will win. The complaint merely starts the case and tells the defendant what to answer.
A real-world example of Complaint
A business sues a former partner for taking company funds. Its attorney files a complaint with the court clerk, which is then served on the former partner, who must answer within the required time.
A worked example of Complaint
A homeowner files a complaint against a roofing company for defective work, alleging breach of contract and negligence and seeking $40,000. The company answers, denying the claims, and the case proceeds to discovery. If the complaint had failed to state a plausible claim, the company could move to dismiss it before any discovery, so the complaint's factual detail often determines whether the case survives its earliest stage.
How Complaint works in practice
When drafting a complaint, state the facts clearly, identify each legal claim, and demand specific relief, because vague or incomplete pleadings invite dismissal. Verify the correct court and the statute of limitations before filing. When served with a complaint, read it carefully and meet the answer deadline, because the allegations you fail to deny can be treated as admitted. A complaint that bundles several claims together also risks having the whole case delayed, so presenting each cause of action separately and with its own factual basis gives the court a clean record to rule on.
Questions about Complaint
What must a complaint include?
Jurisdiction, the facts, and the legal claims for relief.
Can I amend it?
Often, with leave of court or the defendant’s consent.
What if it is wrong?
The defendant can move to dismiss or answer and defend.
Is the complaint public?
Yes, once filed, it is generally a public record.