37 C.F.R. § 10.111 Avoiding even the appearance of impropriety.
Title 37 - Patents, Trademarks, and Copyrights
(a) A practitioner shall not accept private employment in a matter upon the merits of which he or she has acted in a judicial capacity. (b) A practitioner shall not accept private employment in a matter in which he or she had personal responsibility while a public employee. (c) A practitioner shall not state or imply that the practitioner is able to influence improperly or upon irrelevant grounds any tribunal, legislative body, or public official.
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
§ 10.111 Avoiding even the appearance of impropriety.
