Illinois Statutes Chapter 750. Families § 46/302. Execution of voluntary acknowledgment

(1) be in a record;

(2) be signed, or otherwise authenticated, under penalty of perjury by the mother and by the man seeking to establish his parentage;

(3) state that the child whose parentage is being acknowledged:

(4) be witnessed; and

(5) state that the signatories understand that the voluntary acknowledgment is the equivalent of a judicial adjudication of parentage of the child and that: (i) a challenge by a signatory to the voluntary acknowledgment may be permitted only upon a showing of fraud, duress, or material mistake of fact; and (ii) a challenge to the voluntary acknowledgment is barred after 2 years unless that period is tolled pursuant to the law

(1) states that another person is a presumed parent, unless a denial signed or otherwise authenticated by the presumed parent is filed with the Department of Healthcare and Family Services, as provided by law;

(2) states that another person is an acknowledged or adjudicated parent; or

(3) falsely denies the existence of a presumed, acknowledged, or adjudicated parent of the child.