Ohio Rev. Code Ann. § 4705.03

Before an attorney at law is suspended or removed, or publicly or privately reprimanded, written charges must be filed against him, stating distinctly the grounds of complaint, and a copy thereof, certified by the clerk, under the seal of the court, served upon him. After such service, such attorney shall be allowed a reasonable time to collect and present testimony in his own defense, and he shall be heard by himself or counsel.