Indiana Code Title 34. Civil Law and Procedure § 34-33-3-2

Sec. 2. An action may be filed in the county:

at the election of the plaintiff. Service of process shall be made on the secretary of state in accordance with Trial Rule 4.10 of the Indiana Rules of Trial Procedure, together with the fee set forth in IC 23-0.5-9-56. The service is sufficient service upon the person if notice of service and a copy of the process are immediately sent by registered mail to the defendant and the defendant's return receipt is appended to the original process and filed in the court.