Statute of limitations

Tenn. Code Ann. § 36-2-306, under Parentage and Legitimation.

Tenn. Code Ann. § 36-2-306

An action to establish the parentage of a child may be instituted before or after the birth of the child and until three (3) years beyond the child's age of majority. This chapter shall not affect the relationship of parent and child as established in § 31-2-105.