This proceeding was brought well beyond the statutory deadline for rescinding an acknowledgment of paternity, and petitioner failed to make a prima facie showing of fraud, duress or material mistake of fact ( see Family Ct Act § 516-a [b]; Ng v Calderon, 6 AD3d 255). Petitioner admitted that he signed the acknowledgment of paternity 12 years earlier with the knowledge that he was not the child's biological father.