Leave to amend a pleading under CPLR 3025(b) should be freely granted unless the proposed amendment would unfairly prejudice or surprise the opposing party, or is palpably insufficient or patently devoid of merit. A determination whether to grant leave is within the Supreme Court's broad discretion, and the exercise of that discretion will not be lightly disturbed on appeal. In exercising its discretion, the court should consider how long the party seeking the amendment was aware of the facts upon which the motion is predicated and whether there is a reasonable excuse for the delay.
Askari v. McDermott, Will & Emery, LLP, NY Slip Op 02897 (2d Dep't May 14, 2025)