805 ILCS 180/1-50
2021 Illinois Compiled Statutes|Chapter 805 - BUSINESS ORGANIZATIONS|805 ILCS 180/ - Limited Liability Company Act.|Article 1 - General Provisions

Sec. 1-50. Service of process on limited liability  company.(a) Any process, notice, or demand required or  permitted by law to be served upon either a limited liability  company or foreign limited liability company shall be served  either upon the registered agent appointed by the limited  liability company 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 limited liability company upon  whom any process, notice, or demand may be served under any  of the following circumstances:(1) Whenever the limited liability company shall fail     to appoint or maintain a registered agent in this State.(2) Whenever the limited liability company's     registered agent cannot with reasonable diligence be found at the registered office in this State or at the principal place of business stated in the articles of organization.(3) When a limited liability company has dissolved,     the conditions of paragraph (1) and paragraph (2) exist, and a civil action, suit or proceeding is instituted against or affecting the limited liability company within 5 years after the issuance of a certificate of dissolution or the filing of a judgment of dissolution.(4) When a domestic limited liability company has     been dissolved, the conditions of paragraph (1) or paragraph (2) exist, and a criminal proceeding has been instituted against or affecting the limited liability company.(5) When the admission of a foreign limited liability     company to transact business in this State has been revoked or withdrawn.(c) Service under subsection (b) shall be made by the person instituting  the action by doing  all of the following:(1) Serving on the Secretary of State, or on any     employee having responsibility for administering this Act, a copy of the process, notice, or demand, together with any papers required by law to be delivered in connection with service and paying the fee prescribed by Article 50 of this Act.(2) Transmitting notice of the service on the     Secretary of State and a copy of the process, notice, or demand and accompanying papers to the limited liability company being served, by registered or certified mail:(A) at the last registered office of the limited         liability company shown by the records on file in the Office of the Secretary of State; and(B) at the 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.(3) Attaching an affidavit of compliance with this     Section, in substantially the form that 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 limited liability  company in any other manner now or hereafter permitted by  law.(e) The Secretary of State shall keep, for a period of  5 years from the date of service, a record of all processes,  notices, and demands served upon him or her under this  Section and shall record therein the time of the service and  such person's action with reference thereto.  (Source: P.A. 98-171, eff. 8-5-13.)