(a) Without Leave of Court. A party may amend its pleading once without leave of the court at any time before the answer, demurrer, or motion to strike is filed.Customer: The Plaintiff entered a motion to strike my amended answer. Ask for leave to amend, attach a copy of the proposed amended complaint to your motion, and show affirmatively why the other side cannot claim any prejudice. This document contains the Federal Rules of Civil Procedure to- gether with forms, as amended to December 1, 2014. A party may amend his pleading once without leave of court at any time before the period for responding to it expires. I agree with my colleague. Debtor filed a voluntary petition under Chapter 7 of the Bankruptcy Code. (Bankr. Case No. 19-58417-LRC, Doc. 1). Please see our video Motion to Dismiss since there is an exception to this rule.