MI HB5212

Renames 2012 PA 159 as the "Revocation of Parentage Act" and replaces references to "paternity" with "parentage" throughout the statute.

Establishes procedures for setting aside acknowledgments of parentage, paternity orders, and orders of filiation within 3 years after a child's birth or 1 year after the relevant order, supported by affidavit alleging mistake of fact, newly discovered evidence, fraud, misrepresentation, misconduct, or duress.

Allows mothers, presumed parents, or alleged fathers to challenge parentage determinations in limited circumstances, including mutual acknowledgment of biological relationships or failure to provide support for 2+ years, with court discretion to refuse orders not in the child's best interests.

Authorizes courts to order genetic testing and requires consideration of multiple factors before setting aside parentage determinations, including the length of time a presumed parent knew of potential non-paternity and the child's best interests.

Prohibits genetic testing challenges to parentage of individuals determined to be parents under the assisted reproduction and surrogacy parentage act and exempts children conceived through compliant surrogacy agreements from these provisions.

Takes effect 90 days after enactment and is contingent upon passage of House Bill No. 5207.