(35 ILCS 200/22-45)
    Sec. 22-45. Tax deed incontestable unless order appealed or relief petitioned. Tax deeds issued under Section 22-40 are incontestable except by appeal from the order of the court directing the county clerk to issue the tax deed. However, relief from such order may be had under Sections 2-1203 or 2-1401 of the Code of Civil Procedure in the same manner and to the same extent as may be had under those Sections with respect to final orders and judgments in other proceedings. The grounds for relief under Section 2-1401 shall be limited to:
        (1) proof that the taxes were paid prior to sale;
        (2) proof that the property was exempt from taxation;
        (3) proof by clear and convincing evidence that the
tax deed had been procured by fraud or deception by the tax purchaser or his or her assignee; or
        (4) proof by a person or party holding a recorded
ownership or other recorded interest in the property that he or she was not named as a party in the publication notice as set forth in Section 22-20, and that the tax purchaser or his or her assignee did not make a diligent inquiry and effort to serve that person or party with the notices required by Sections 22-10 through 22-30.
    In cases of the sale of homestead property in counties with 3,000,000 or more inhabitants, a tax deed may also be voided by the court upon petition, filed not more than 3 months after an order for tax deed was entered, if the court finds that the property was owner occupied on the expiration date of the period of redemption and that the order for deed was effectuated pursuant to a negligent or willful error made by an employee of the county clerk or county collector during the period of redemption from the sale that was reasonably relied upon to the detriment of any person having a redeemable interest. In such a case, the tax purchaser shall be entitled to the original amount required to redeem the property plus interest from the sale as of the last date of redemption together with costs actually expended subsequent to the expiration of the period of redemption and reasonable attorney's fees, all of which shall be dispensed from the fund created by Section 21-295. In those cases of error where the court vacates the tax deed, it may award the petitioner reasonable attorney's fees and court costs actually expended, payable from that fund. The court hearing a petition filed under this Section or Section 2-1401 of the Code of Civil Procedure may concurrently hear a petition filed under Section 21-295 and may grant relief under any Section.
    This amendatory Act of the 95th General Assembly shall be construed as being declarative of existing law and not as a new enactment.
(Source: P.A. 95-477, eff. 6-1-08.)