A practitioner shall not:

(a) Seek to influence a judge, hearing officer, administrative law judge, administrative patent judge, administrative trademark judge, juror, prospective juror, employee or officer of the Office, or other official by means prohibited by law;

(b) Communicate ex parte with such a person during the proceeding unless authorized to do so by law, rule or court order; or

(c) [Reserved]

(d) Engage in conduct intended to disrupt any proceeding before a tribunal.