N.Y. Comp. Codes R. & Regs. tit. 22, § 1250.9
(2) if employing the appendix method, an original, five hard copies and one digital copy of appellant’s brief and appendix, with proof of service of one hard copy of the brief and appendix upon each other party to the appeal, and either:
(4) if perfecting on the original record, an original and five hard copies and one digital copy of appellant’s brief, with proof of service of one hard copy of the brief upon each other party to the appeal and either:
(5) in the First and Second Judicial Departments, where a subpoena is required to be served upon the clerk of the court of original instance pursuant to subparagraphs (2)(i) and (4)(i) of this subdivision, the clerk from whom the papers are subpoenaed shall compile the original papers constituting the record on appeal and cause them to be transmitted to the clerk of the court, together with a certificate listing the papers constituting the record on appeal and stating whether all such papers are included in the papers transmitted.
(b) Extension of time to perfect appeal.
Except where the court has directed that the appeal be perfected by a particular time, the parties may stipulate, or in the alternative an appellant may apply by letter, on notice to all parties, to extend the time to perfect an appeal up to 60 days. Any such stipulation shall be filed with the court. The appellant may thereafter apply by letter, on notice to all parties, to extend the time to perfect by up to an additional 30 days. Any further application for an extension of time to perfect the appeal shall be made by motion.
(c) Respondent’s filing.
The respondent on an appeal shall file with the clerk within 30 days of the date of service of the appellant’s submissions or, in the First Judicial Department, in accordance with the court’s published terms calendar:
(2) under the appendix method, an original and five hard copies and one digital copy of the respondent’s brief and appendix, if any, with proof of service of one hard copy of the brief and appendix, if any, upon each party to the appeal.
(d) Appellant’s reply.
The appellant shall file with the clerk an original, five hard copies and one digital copy of the appellant’s reply brief, with proof of service of one hard copy of the brief upon each party to the matter, within 10 days of the date of service of the respondent’s submissions or, in the First Judicial Department, in accordance with the court’s published terms calendar.
(e) Pro se or unrepresented parties shall be exempt from the requirement of the filing of a digital copy of any brief or other document.
(1) Cross appeals. In a cross appeal:
(4) Absent an order of the court, appeals from orders or judgments in separate actions or proceedings cannot be consolidated but may, upon written request of a party, be scheduled by the court to be heard together on the same day.
(g) Extensions of time to file and serve responsive briefs.
Except where the court has directed that answering or reply briefs be served and filed by a particular time, an extension of time to serve and file such briefs may be obtained as follows:
(2) By motion. A party may move to extend the time to file and serve a brief.
(h) Leave to file oversized brief.
An application for permission to file an oversized brief shall be made to the clerk by letter stating the number of words or pages by which the brief exceeds the limits set forth in this section and the reasons why submission of an oversized brief is necessary. The letter shall be accompanied by a copy of the proposed brief and printing specifications statement.
(i) Constitutionality of State statute.
Where the constitutionality of a statute of the State is involved in a matter in which the State is not a party, the party raising the issue shall serve a copy of the brief upon the Attorney General of the State of New York, and file proof of service with the court. The Attorney General may thereupon intervene in the appeal.
(f) Cross appeals; concurrent appeals from single order or judgment; consolidation of appeals from multiple orders or judgments.
(a) Appellant’s filing.
Except where the court has directed that an appeal be perfected by a particular time, an appellant shall file with the clerk within six months of the date of the notice of appeal or order granting leave to appeal: