(a) All papers other than a complaint shall be served on a respondent represented by an attorney by:

(1) Delivering a copy of the paper to the office of the attorney; or

(2) Mailing a copy of the paper by first-class mail or “Express Mail” to the attorney at the address provided by the attorney under § 10.140(a)(1); or

(3) Any other method mutually agreeable to the attorney and a representative for the Director.

(b) All papers other than a complaint shall be served on a respondent who is not represented by an attorney by:

(1) Delivering a copy of the paper to the respondent; or

(2) Mailing a copy of the paper by first-class mail or “Express Mail” to the respondent at the address to which a complaint may be served or such other address as may be designated in writing by the respondent; or

(3) Any other method mutually agreeable to the respondent and a representative of the Director.

(c) A respondent shall serve on the representative for the Director one copy of each paper filed with the administrative law judge or the Director. A paper may be served on the representative for the Director by:

(1) Delivering a copy of the paper to the representative; or

(2) Mailing a copy of the paper by first-class mail or “Express Mail” to an address designated in writing by the representative; or

(3) Any other method mutually agreeable to the respondent and the representative.

(d) Each paper filed in a disciplinary proceeding shall contain therein a certificate of service indicating:

(1) The date on which service was made and

(2) The method by which service was made.

(e) The administrative law judge or the Commissioner may require that a paper be served by hand or by “Express Mail.”

(f) Service by mail is completed when the paper mailed in the United States is placed into the custody of the U.S. Postal Service.