A party whose parentage of a child has been previously determined by or pursuant to law may not plead nonparentage as a defense to a proceeding under parts 20-29 of this chapter.
Nonparentage as defense
Tenn. Code Ann. § 36-5-2315, under Uniform Interstate Family Support Act — Civil Provisions of General Application.
Tenn. Code Ann. § 36-5-2315