Ohio Rev. Code Ann. § 1706.09
(A) Each limited liability company and foreign limited liability company that has an effective registration as a foreign limited liability company under section 1706.511 of the Revised Code shall maintain continuously in this state an agent for service of process on the company. The agent shall be one of the following:
(B)
(1) The secretary of state shall not accept original articles of organization of a limited liability company or an original registration of a foreign limited liability company for filing unless both of the following accompany the articles or registration:
(H)
(1) Any legal process, notice, or demand required or permitted by law to be served upon a limited liability company may be served upon the company as follows: