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Legal Definition

Complaint

A complaint is the initial pleading filed by a plaintiff to formally commence a civil lawsuit. In personal injury cases, the complaint is the legal document that sets forth the plaintiff's factual allegations, the legal theories of liability being asserted, and the damages being sought. Filing the complaint with the court and properly serving it on the defendant marks the official beginning of the litigation process. Once served, the defendant has a specified period — typically 20 to 30 days — to file a formal response.

A well-drafted personal injury complaint must meet the applicable pleading standards to survive a motion to dismiss. Under the federal notice pleading standard (and similar standards in many state courts), the complaint must contain a short and plain statement of the claim showing that the plaintiff is entitled to relief — enough factual content to raise a plausible inference of each element of the claim. Some jurisdictions and claim types require more specific fact pleading, particularly in medical malpractice cases that require a certificate of merit from a medical expert.

The complaint typically includes a caption identifying the parties and court, a series of numbered factual allegations describing the incident and resulting harm, specific counts or causes of action (such as negligence, strict liability, or wrongful death) with the legal elements alleged for each, and a prayer for relief specifying the types and amounts of damages sought. In some cases, a jury demand must be included in or with the complaint if the plaintiff wishes to have the case decided by a jury rather than a judge.

The filing of the complaint has several important legal effects beyond commencing the lawsuit. It establishes the date on which the statute of limitations was tolled — meaning the filing date stops the clock, even if the defendant is not served immediately. It invokes the court's jurisdiction and creates the official case record. It also triggers the defendant's obligation to preserve relevant evidence (a litigation hold), and may serve as the basis for an attachment or injunction in appropriate cases. Errors in the complaint can often be corrected through amendments, but significant deficiencies can lead to early dismissal of the case.

For informational purposes only. Not legal advice. Consult a licensed attorney.

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