Amended pleading

In law as practiced in countries that follow the English models, a pleading is a formal written statement of a party's claims or defenses to another party's claims in a civil action. The parties' pleadings in a case define the issues to be adjudicated in the action.

The Civil Procedure Rules (CPR) govern pleading in England and Wales. Federal Rules of Civil Procedure govern pleading in United States federal courts. Each state in the United States has its own statutes and rules that govern pleading in the courts of that state.

In the United States, a complaint is the first pleading filed by a plaintiff which initiates a lawsuit. A complaint sets forth the relevant allegations of fact that give rise to one or more legal causes of action along with a prayer for relief and sometimes a statement of damages claimed (an ad quod damnum clause). In some situations, a complaint is called a petition, in which case the party filing it is called the petitioner and the other party is the respondent. In equity, sometimes called chancery, the initial pleading may be called either a petition or a bill of complaint in chancery.

In England and Wales, the first pleading is a Claim Form, issued under either Part 7 or Part 8 of the Civil Procedure Rules, which sets out the nature of the action and the relief sought, and may give brief particulars of the claim. The Claimant also has the option, under Practice Direction 7A.61 to serve Particulars of Claim (a document setting out the allegations which found the cause of action) within 14 days of issue of the Claim Form.

When used in civil proceedings in England and Wales, the term "complaint" refers to the mechanism by which civil proceedings are instituted in the magistrates' court and may be either written or oral.

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