805 ILCS 5/5.25
2021 Illinois Compiled Statutes|Chapter 805 - BUSINESS ORGANIZATIONS|805 ILCS 5/ - Business Corporation Act of 1983.|Article 5 - Office And Agent

 (from Ch. 32, par. 5.25)Sec. 5.25. Service of process on domestic or foreign corporation.(a) Any process, notice, or demand required or permitted by law to be served  upon a domestic corporation or a foreign corporation having authority to  transact business in this State may be served either upon  the registered agent appointed by the corporation or upon the Secretary  of State as provided in this Section.(b) The Secretary of State shall be irrevocably appointed as an agent  of a domestic corporation or of a foreign corporation having authority upon  whom any process, notice or demand may be served:(1) Whenever the corporation shall fail to appoint or     maintain a registered agent in this State, or(2) Whenever the corporation's registered agent     cannot with reasonable diligence be found at the registered office in this State, or(3) When a domestic corporation has been dissolved,     the conditions of paragraph (1) or paragraph (2) exist, and a civil action, suit or proceeding is instituted against or affecting the corporation within the five years after the issuance of a certificate of dissolution or the filing of a judgment of dissolution, or(4) When a domestic corporation has been dissolved,     the conditions of paragraph (1) or paragraph (2) exist, and a criminal proceeding has been instituted against or affecting the corporation, or(5) When the authority of a foreign corporation to     transact business in this State has been revoked or withdrawn.(c) Service under subsection (b) shall be made by:(1) Service on the Secretary of State, or on any     clerk having charge of the corporation division of his or her office, of a copy of the process, notice or demand, together with any papers required by law to be delivered in connection with service, and a fee as prescribed by subsection (b) of Section 15.15 of this Act;(2) Transmittal by the person instituting the action,     suit or proceeding of notice of the service on the Secretary of State and a copy of the process, notice or demand and accompanying papers to the corporation being served, by registered or certified mail:(i) At the last registered office of the         corporation as shown by the records on file in the office of the Secretary of State; and(ii) At such address the use of which the person         instituting the action, suit or proceeding knows or, on the basis of reasonable inquiry, has reason to believe, is most likely to result in actual notice; and(3) Appendage, by the person instituting the action,     suit or proceeding, of an affidavit of compliance with this Section, in substantially such form as the Secretary of State may by rule or regulation prescribe, to the process, notice or demand.(d) Nothing herein contained shall limit or affect the right to serve  any process, notice, or demand required or permitted by law to be served  upon a corporation in any other manner now or hereafter permitted by law.(e) The Secretary of State shall keep a record of all processes, notices,  and demands served upon him or her under this Section, and shall record  therein the time of such service and his or her action with reference  thereto, but shall not be required to retain such information for a  period longer than five years from his or her receipt of the service.  (Source: P.A. 98-171, eff. 8-5-13.)