Tennessee Code Title 4. State Government § 4-18-106

(a) A civil action under § 4-18-104 may not be filed more than three (3) years after the date of discovery by the official of the state or political subdivision charged with responsibility to act in the circumstances or, in any event, no more than ten (10) years after the date on which the violation of § 4-18-103 was committed.

(b) A civil action under § 4-18-104 may be brought for activity prior to July 1, 2001, if the limitations period set in subsection (a) has not lapsed.

(c) In any action brought under § 4-18-104, the state, the political subdivision, or the qui tam plaintiff shall be required to prove all essential elements of the cause of action, including damages, by a preponderance of the evidence.

(d) Notwithstanding any other law to the contrary, a guilty verdict rendered in a criminal proceeding charging false statements or fraud, whether upon a verdict after trial or upon a plea of guilty or nolo contendere, except for a plea of nolo contendere made prior to July 1, 2001, shall estop the defendant from denying the essential elements of the offense in any action that involves the same transaction as in the criminal proceeding and that is brought under § 4-18-104(a), (b), or (c).