65 ILCS 100/4
The General Assembly finds that it is necessary and desirable to reduce the risk that persons who expend or commit substantial sums in reliance on the provisions of this Act will be exposed to deferred litigation which might jeopardize financial and other arrangements necessary to carry out promptly the purposes of this Act. Therefore, no later than 30 days after the effective date of this Act, the clerk of any municipality having a population in excess of 2,000,000 shall cause to be published a notice setting forth:
The notice shall be published in full, in 8 point type or the equivalent thereof, within such 30-day period in one or more newspapers of general circulation in the county in which such municipality is located and in the Illinois counties contiguous to such county. No action or proceeding to contest the validity of any provision of Section 9-2a of the Liquor Control Act of 1934, as amended by this amendatory Act of 1989, or Sections 10-205 through 10-220 of the Property Tax Code may be commenced in any court by the People of the State of Illinois; or any person, firm, corporation or other legal entity, public or private; or any unit of local government, school district or taxing district; or any association of persons; or any government officer, department, political subdivision or agency; or any successor in interest to any of the foregoing, unless written notice of intention to institute such action or proceeding is filed with the clerk of such municipality within 6 months following the date of publication of the notice required by this Section and such action or proceeding is commenced within one year following the date of publication of the notice.
65 ILCS 100/4