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Procedural · Rule 15

Motion for Leave to Amend

Asks permission to change a pleading after amendment is no longer automatic.

Governing rule
Fed. R. Civ. P. 15(a)
Read the rule

What it is

A request for permission to file an amended complaint, answer, counterclaim, or other pleading after amendment is no longer available automatically. The motion asks the court to allow the case papers to change so the pleadings match the facts or claims the party wants to pursue.

When it's used

Filed after the period for amendment as of right has expired, or when a scheduling order requires court permission. Parties use it to add facts, claims, parties, defenses, or corrections discovered after the original pleading.

What the other side does

The opposing party may argue undue delay, bad faith, prejudice, repeated failure to fix defects, or futility. Futility means the proposed amendment would still fail even if allowed.

Common outcomes

Courts often grant leave when the case is still early and prejudice is low. Denials become more likely after deadlines pass, discovery closes, or the proposed pleading would not survive dismissal.

Not legal advice. Motion practice varies by court, judge, and case type. Local rules and standing orders frequently modify the federal defaults shown here. If you're facing a motion or considering filing one, talk to a lawyer about strategy and timing for your specific case.