Lawsuit

A lawsuit is a proceeding by one or more parties (the plaintiff or claimant) against one or more parties (the defendant) in a civil court of law. The archaic term "suit in law" is found in only a small number of laws still in effect today. The term "lawsuit" is used with respect to a civil action brought by a plaintiff (a party who claims to have incurred loss as a result of a defendant's actions) who requests a legal remedy or equitable remedy from a court. The defendant is required to respond to the plaintiff's complaint or else risk default judgment. If the plaintiff is successful, judgment is entered in favor of the plaintiff, and the court may impose the legal or equitable remedies available against the defendant (respondent). A variety of court orders may be issued in connection with or as part of the judgment to enforce a right, award damages or restitution, or impose a temporary or permanent injunction to prevent an act or compel an act. A declaratory judgment may be issued to prevent future legal disputes.

A lawsuit may involve resolution of disputes involving issues of private law between individuals, business entities or non-profit organizations. A lawsuit may also involve issues of public law in the sense that the state is treated as if it were a private party in a civil case, either as a plaintiff with a civil cause of action to enforce certain laws or as a defendant in actions contesting the legality of the state's laws or seeking monetary damages for injuries caused by agents of the state.

Conducting a civil action is called litigation. The plaintiffs and defendants are called litigants and the attorneys representing them are called litigators. The term litigation may also refer to the conducting of criminal actions (see criminal procedure).

The etymology of the word 'lawsuit' derives from the combination of law and suit. Suit derives from the Old French 'suite' or 'sieute' meaning to pursue or follow. This term was derived from the Latin 'secutus', the past participle of 'sequi' meaning to attend or follow.

Similarly, the word 'sue', derives from the Old French 'suir' or 'sivre' meaning to pursue or follow after. This was also derived from the Latin word 'sequi'.

Rules of criminal or civil procedure govern the conduct of a lawsuit in the common law adversarial system of dispute resolution. Procedural rules arise from statutory law, case law, and constitutional provisions (especially the right to due process). The details of each kind of legal procedure differ greatly from jurisdiction to jurisdiction, and often from court to court even within the same jurisdiction. It is important for litigants to be aware of all relevant procedural rules (or to hire competent counsel who can either comply with such rules on their behalf or explain the rules to them), because the litigants ultimately dictate the timing and progression of the lawsuit. Litigants are responsible for obtaining the desired result and the timing of reaching this result. Failure to comply with procedural rules may result in serious limitations that can affect the ability of one to present claims or defenses at any subsequent trial, or even lead to the dismissal of the lawsuit altogether.

Though the majority of lawsuits are settled before ever reaching trial, they can still be very complicated to litigate. This is particularly true in federal systems, where a federal court may be applying state law (e.g. the Erie doctrine, for example in the United States), or vice versa. It is also possible for one state to apply the law of another in cases where additionally it may not be clear which level (or location) of court actually has jurisdiction over the claim or personal jurisdiction over the defendant, or whether the plaintiff has standing to participate in a lawsuit. About 98 percent of civil cases in the United States federal courts are resolved without a trial. Domestic courts are also often called upon to apply foreign law, or to act upon foreign defendants, over whom they may not even have the ability to enforce a judgment if the defendant's assets are theoretically outside their reach.

Lawsuits can become additionally complicated as more parties become involved (see joinder). Within a "single" lawsuit, there can be any number of claims and defenses (all based on numerous laws) between any number of plaintiffs or defendants. Each of these participants can bring any number of cross-claims and counterclaims against each other, and even bring additional parties into the suit on either side after it progresses. In reality, however, courts typically have some power to sever claims and parties into separate actions if it is more efficient to do so. A court can do this if there is not a sufficient overlap of factual issues between the various associates, separating the issues into different lawsuits.