(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 §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 §11.9 may use the designation “Limited Recognition.”