(a) A practitioner may communicate the fact that the practitioner does or does not practice in particular fields of law.
(b) A registered practitioner who is an attorney may use the designation ``Patents,'' ``Patent Attorney,'' ``Patent Lawyer,'' ``Registered Patent Attorney,'' or a substantially similar designation. A registered practitioner who is not an attorney may use the designation ``Patents,'' ``Patent Agent,'' ``Registered Patent Agent,'' or a substantially similar designation. Unless authorized by Sec. 11.14(b), a registered patent agent shall not hold himself or herself out as being qualified or authorized to practice before the Office in trademark matters or before a court.
(c) [Reserved]
(d) A practitioner shall not state or imply that a practitioner is certified as a specialist in a particular field of law, unless:
(1) The practitioner has been certified as a specialist by an organization that has been approved by an appropriate state authority or that has been accredited by the American Bar Association; and
(2) The name of the certifying organization is clearly identified in the communication.
(e) An individual granted limited recognition under Sec. 11.9 may use the designation ``Limited Recognition.''