603 Standards of Conduct
37 C.F.R. §11.15
Refusal to recognize a practitioner. Any practitioner authorized to appear before the Office may be suspended, excluded, or reprimanded in accordance with the provisions of this Part. Any practitioner who is suspended or excluded under this Part shall not be entitled to practice before the Office in patent, trademark, or other non-patent matters while suspended or excluded.
Part 11 of Title 37 of the Code of Federal Regulations pertains to representation of others before the USPTO. Part 11 identifies and defines individuals entitled to practice before the USPTO, sets forth a procedure for investigations and disciplinary proceedings, and establishes rules of professional conduct and responsibility.