An amended complaint is a revised complaint that changes, adds, or corrects allegations, claims, parties, or requested relief.
It replaces or modifies the earlier pleading according to the applicable procedural rules.
Why an amended complaint matters
Cases can change after filing. A plaintiff may discover new facts, correct mistakes, add claims, remove claims, or respond to a motion to dismiss.
Amendment rules matter because timing, permission, prejudice, and relation-back issues can affect whether the amended pleading is allowed.
Where an amended complaint appears
Amended complaints appear early in litigation, after motions to dismiss, after discovery reveals new facts, or when parties are added or removed.
The court may allow amendment automatically within a limited period or require a motion for leave to amend.
How it differs from nearby terms
A complaint starts a lawsuit. An amended complaint revises that pleading.
A third-party complaint is different because it is usually filed by a defendant to bring another party into the case.
Practical example
A consumer files a complaint and later learns the correct corporate defendant name. The consumer files an amended complaint correcting the party name and adding more factual detail.
Related Terms
Quick check
Question: Does an amended complaint revise the original complaint?
Answer: Yes. It changes, adds, or corrects the pleading under procedural rules.