New York Codes, Rules and Regulations
Title 22 - JUDICIARY
Subtitle A - JUDICIAL ADMINISTRATION
Chapter II - UNIFORM RULES FOR THE NEW YORK STATE TRIAL COURTS
Part 202 - Uniform Civil Rules for the Supreme Court and the County Court
Section 202.70 - Rules of the Commercial Division of the Supreme Court
Rule 202.70.18 - Sur-Reply and Post-Submission Papers

Absent express permission in advance, sur-reply papers, including correspondence, addressing the merits of a motion are not permitted, except that counsel may inform the court by letter of the citation of any post-submission court decision that is relevant to the pending issues, but there shall be no additional argument. Materials submitted in violation hereof will not be read or considered. Opposing counsel who receives a copy of materials submitted in violation of this rule shall not respond in kind.