(750 ILCS 46/303)
    Sec. 303. Denial of parentage. A presumed parent may sign a denial of parentage. The denial is valid only if:
        (a) a voluntary acknowledgment described in Section
301 of this Act signed, or otherwise authenticated, by a man is filed pursuant to Section 305 of this Act;
        (b) the denial is in a record, and is signed, or
otherwise authenticated, under penalty of perjury; and
        (c) the presumed parent has not previously:
            (1) acknowledged his parentage, unless the
previous voluntary acknowledgment has been rescinded under Section 307 of this Act or successfully challenged under Section 308 of this Act; or
            (2) been adjudicated to be the parent of the
(Source: P.A. 99-85, eff. 1-1-16; 99-769, eff. 1-1-17.)