(735 ILCS 5/2-1901) (from Ch. 110, par. 2-1901)
    Sec. 2-1901. Lis Pendens - Operative date of notice. Except as otherwise provided in Section 15-1503, every condemnation proceeding, proceeding to sell real estate of decedent to pay debts, or other action seeking equitable relief, affecting or involving real property shall, from the time of the filing in the office of the recorder in the county where the real estate is located, of a notice signed by any party to the action or his attorney of record or attorney in fact, on his or her behalf, setting forth the title of the action, the parties to it, the court where it was brought and a description of the real estate, be constructive notice to every person subsequently acquiring an interest in or a lien on the property affected thereby, and every such person and every person acquiring an interest or lien as above stated, not in possession of the property and whose interest or lien is not shown of record at the time of filing such notice, shall, for the purposes of this Section, be deemed a subsequent purchaser and shall be bound by the proceedings to the same extent and in the same manner as if he or she were a party thereto. If in any such action plaintiff or petitioner neglects or fails for the period of 6 months after the filing of the complaint or petition to cause notice to be given the defendant or defendants, either by service of summons or publication as required by law, then such notice shall cease to be such constructive notice until service of summons or publication as required by law is had.
    This Section authorizes a notice of any of these actions concerning real property pending in any United States district court to be recorded and indexed in the same manner and in the same place as herein provided with respect to notices of such actions pending in courts of this State.
    However, no such action or proceeding shall be constructive notice, either before or after service of summons or publication, as to property subject to the provisions of "An Act concerning land titles", approved May 1, 1897, as amended, until the provisions of Section 84 of that Act are complied with.
    At any time during the pendency of an action or proceeding initiated after July 1, 1959, which is constructive notice, the court, upon motion, may for good cause shown, provided a finding of specific performance is not necessary for final judgment in the action or proceeding, and upon such terms and conditions, including the posting of suitable bond, if any, as it may deem equitable, authorize the making of a deed, mortgage, lease or other conveyance of any or all of the real estate affected or involved, in which event the party to whom the deed, mortgage, lease or other conveyance of the real estate is made and those claiming under him or her shall not be bound by such action or proceeding.
(Source: P.A. 85-907.)