Sec. 4. After the expiration of the period described in section 2 of this chapter, neither a person whose parental rights are terminated by the entry of an adoption decree nor any other person may challenge the adoption decree even if: (1) notice of the adoption was not given; or (2) the adoption proceedings were in any other manner defective. [Pre-1997 Recodification Citation: 31-3-1.3-2(c).] As added by P.L.1-1997, SEC.11. Amended by P.L.113-2017, SEC.12.