Effect of service upon counsel. When any participant has appeared by coun

sel, service upon such counsel shall be deemed service upon the participant as pro- vided in Section 3.4(b) of these Rules (relating to representation by counsel) and separate service upon the party may be omitted as provided in such subsection. 3.11. Date of service. The date of service shall be the day when the document served is deposited in the United States mail, or is delivered in person, as the case may be; except as to pleadings or other documents required or permitted to be filed with the Board as provided in section 3.3 of these Rules. A postmark shall be determinative 6 Revised October 2023 of the day of deposit in the United States Mail. 3.12. Proof of service. There shall accompany and be attached to the original of each pleading or other document filed with the Board, when service is required to be made by the parties, a certificate of service substantially in the form prescribed by Section 3.13 of these Rules (relating to certificate of service). All other copies filed shall be fully conformed thereto. 3.13. Certificate of service. I hereby certify that I have this day served by (indicate method of service) the foregoing document upon all parties of record in this pro- ceeding. Dated this _______________ day of _______________, 20_________. _____________________________ Signature 3.14. Amendment of pleadings. An amendment of any petition for discipline or other pleading may be made only on leave granted by the Chairperson, the Vice- Chairperson, or Acting Chairperson of the Board. 3.15. Grounds for institution of formal proceedings. Disciplinary Counsel shall institute formal disciplinary proceedings by filing with the Board a petition under Section 3.16 of these Rules (relating to petition for discipline) in either of the fol- lowing cases: (a) Pursuant to a referral by the Supreme Court following the conviction of the respondent of a crime. (b) Pursuant to a determination to institute formal proceedings made under Article III, Rule 6 of the Supreme Court Rules.