KS HB2651

Allows challenges to voluntary paternity acknowledgments based on fraud, duress, or material mistake of fact to be filed at any time after discovery, rather than being subject to strict time limits

Establishes that genetic test results excluding the signatory father or identifying another man as the father constitute a "change of circumstances" warranting a court finding of material mistake of fact

Retains the 60-day revocation window for signatories over 18, or until the first court/administrative proceeding involving the child, whichever comes earlier

Extends the challenge period for minors who signed an acknowledgment until they turn 19, with courts required to consider the child's best interests if the child is over one year old

Specifies that child support obligations continue during a challenge action unless good cause is shown, and any support paid prior to revocation is not recoverable