37 C.F.R. § 10.20 Canons and Disciplinary Rules.
Title 37 - Patents, Trademarks, and Copyrights
(a) Canons are set out in §§10.21, 10.30, 10.46, 10.56, 10.61, 10.76, 10.83, 10.100, and 10.110. Canons are statements of axiomatic norms, expressing in general terms the standards of professional conduct expected of practitioners in their relationships with the public, with the legal system, and with the legal profession. (b) Disciplinary Rules are set out in §§10.22–10.24, 10.31–10.40, 10.47–10.57, 10.62–10.68, 10.77, 10.78, 10.84, 10.85, 10.87–10.89, 10.92, 10.93, 10.101–10.103, 10.111, and 10.112. Disciplinary Rules are mandatory in character and state the minimum level of conduct below which no practitioner can fall without being subjected to disciplinary action.
Title 37: Patents, Trademarks, and Copyrights
PART 10—REPRESENTATION OF OTHERS BEFORE THE PATENT AND TRADEMARK OFFICE
Patent and Trademark Office Code of Professional Responsibility
§ 10.20 Canons and Disciplinary Rules.