(750 ILCS 50/11) (from Ch. 40, par. 1513)
    Sec. 11. Consents, surrenders, waivers, irrevocability.
    (a) A consent to adoption or standby adoption by a parent, including a minor, executed and acknowledged in accordance with the provisions of Section 10 of this Act, or a surrender of a child by a parent, including a minor, to an agency for the purpose of adoption shall be irrevocable unless it shall have been obtained by fraud or duress on the part of the person before whom such consent, surrender, or other document equivalent to a surrender is acknowledged pursuant to the provisions of Section 10 of this Act or on the part of the adopting parents or their agents and a court of competent jurisdiction shall so find. No action to void or revoke a consent to or surrender for adoption, including an action based on fraud or duress, may be commenced after 12 months from the date the consent or surrender was executed. The consent or surrender of a parent who is a minor shall not be voidable because of such minority.
    (a-1) A waiver signed by a putative or legal father, including a minor, executed and acknowledged in accordance with Section 10 of this Act, shall be irrevocable unless it shall have been obtained by fraud or duress on the part of the adopting parents or their agents and a court of competent jurisdiction shall so find. No action to void a waiver may be commenced after 12 months from the date the waiver was executed. The waiver of a putative or legal father who is a minor shall not be voidable because of such minority.
    (b) The petitioners in an adoption proceeding are entitled to rely upon a sworn statement of the biological mother of the child to be adopted identifying the father of her child. The affidavit shall be conclusive evidence as to the biological mother regarding the facts stated therein, and shall create a rebuttable presumption of truth as to the biological father only. Except as provided in Section 11 of this Act, the biological mother of the child shall be permanently barred from attacking the proceeding thereafter. The biological mother shall execute such affidavit in writing and under oath. The affidavit shall be executed by the biological mother before or at the time of execution of the consent or surrender, and shall be retained by the court and be a part of the Court's files. The form of affidavit shall be substantially as follows:
AFFIDAVIT OF IDENTIFICATION
    I, ................., the mother of a (male or female) child, state under oath or affirm as follows:
    (1) That the child was born, or is expected to be born, on (insert date), at ......................., in the State of ...................
    (2) That I reside at .................., in the City or Village of ..........., State of ...................
    (3) That I am of the age of ....... years.
    (4) That I acknowledge that I have been asked to identify the father of my child.
    (5) (CHECK ONE)
    .... I know and am identifying the biological father.
    .... I do not know the identity of the biological father.
    .... I am unwilling to identify the biological father.
    (6A) If I know and am identifying the father:
    That the name of the biological father is ....................; his last known home address is ............; his last known work address is ....................; and he is ..... years of age; or he is deceased, having died on (insert date) at .............., in the State of ..................
    (6B) If I do not know the identity of the biological father:
    I do not know who the biological father is; the following is an explanation of why I am unable to identify him:
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    (6C) If I am unwilling to identify the biological father:
    I do not wish to name the biological father of the child for the following reasons:
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    (7) The physical description of the biological father is: .
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    (8) I reaffirm that the information contained in paragraphs 5, 6, and 7, inclusive, is true and correct.
    (9) I have been informed and understand that if I am unwilling, refuse to identify, or misidentify the biological father of the child, absent fraud or duress, I am permanently barred from attacking the proceedings for the adoption of the child at any time after I sign a final and irrevocable consent to adoption or surrender for purposes of adoption.
    (10) I have read this Affidavit and have had the opportunity to review and question it; it was explained to me by ............................; and I am signing it as my free and voluntary act and understand the contents and the results of signing it.
    Dated (insert date).
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Signature
    Under penalties as provided by law under Section 1-109 of the Code of Civil Procedure, the undersigned certifies that the statements set forth in this Affidavit are true and correct.
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Signature
(Source: P.A. 97-493, eff. 8-22-11.)