Ohio Rev. Code Ann. § 1702.05
(A) Except as provided in this section and in sections 1702.41 and 1702.411 of the Revised Code, the secretary of state shall not accept for filing in the secretary of state's office any articles if the corporate name set forth in the articles is not distinguishable upon the secretary of state's records from any of the following:
(B) The secretary of state shall determine for purposes of this section whether a name is "distinguishable" from another name upon the secretary of state's records. Without excluding other names that may not constitute distinguishable names in this state, a name is not considered distinguishable from another name for purposes of this section solely because it differs from the other name in only one or more of the following manners: