New Jersey Statutes Title 15A. Corporations, Nonprofit 15A § 4-4

a. The registered agent of a domestic corporation or a foreign corporation authorized to conduct activities in this State may resign by complying with the provisions of this section.

b. The registered agent shall serve a notice of resignation by certified mail, return receipt requested, upon the president, or any vice-president, or the secretary or treasurer of the corporation at the address last known to the agent, and shall make an affidavit of the service.  If service cannot be made, the affidavit shall so state, and shall state briefly why the service cannot be made.  The affidavit, together with a copy of the notice of resignation, shall be filed in the office of the Secretary of State.

c. The resignation shall become effective upon the expiration of 30 days after the filing in the office of the Secretary of State of the affidavit under this section or upon the designation by the corporation of a new registered agent pursuant to this act, whichever is earlier.  If the corporation fails to designate a new registered agent within the 30-day period, the corporation shall thereafter be deemed to have no registered agent or registered office in this State.