Amended pleading: a pleading is a formal legal document filed with the court that presents the party's position. Generally, a party may change the pleadings anytime before trial by filing an amendment to pleading or an amended pleading. An amendment to the pleading is an addition, substitution, or change to the original pleading document. The amendment to the pleading does not supersede the original complaint but is considered an addition to the complaint. For example, an amendment may consist of adding or striking out the name of a party or correcting a mistake. An amended pleading supersedes the original and becomes the controlling pleading. An amended pleading is completely rewritten from the original and concerns subsetted matters. An amended complaint must be served on all new defendants pursuant to rule 15 of the Federal Rules of Civil Procedure. A plaintiff may amend the complaint one time before the defendant files a responsive pleading. Thereafter, the plaintiff must seek leave from the court to file an amended complaint. A supplemental pleading contains material facts that occurred subsequent to the filing of the original complaint. The supplemental pleading must be filed upon a notice motion or by stipulation of the parties. A supplemental pleading may be filed any time before judgment is entered.