17 CFR § 9.23 - Answering brief.

---
identifier: "/us/cfr/t17/s9.23"
source: "ecfr"
legal_status: "authoritative_unofficial"
title: "17 CFR § 9.23 - Answering brief."
title_number: 17
title_name: "Commodity and Securities Exchanges"
section_number: "9.23"
section_name: "Answering brief."
chapter_name: "COMMODITY FUTURES TRADING COMMISSION"
part_number: "9"
part_name: "RULES RELATING TO REVIEW OF EXCHANGE DISCIPLINARY, ACCESS DENIAL OR OTHER ADVERSE ACTIONS"
positive_law: false
currency: "2026-04-05"
last_updated: "2026-04-05"
format_version: "1.1.0"
generator: "[email protected]"
authority: "7 U.S.C. 1a, 2, 6b-1, 6c, 7, 7a-2, 7b-3, 8, 9, 9a, 12, 12a, 12c, 13b, 16a, 18, 19, and 21."
regulatory_source: "52 FR 25366, July 7, 1987, unless otherwise noted."
cfr_part: "9"
---


# 9.23 Answering brief.

(a) *Time for filing answering brief.* Within thirty days after service of the appeal brief, the exchange must file with the Commission an answering brief.

(b) *Contents of answering brief.* The answering brief generally must follow the same style as prescribed for the appeal brief but may omit a statement of the issues or of the case if the exchange does not dispute the issues or the statement of the case contained in the appeal brief.

(c) *Length of answering brief.* Without prior leave of the Commission, the answering brief may not exceed thirty-five pages, exclusive of any table of contents, table of cases, index and appendix containing transcripts of testimony, exhibits, statutes, rules, regulations or similar materials.