220 ILCS 5/6-104
All stock and every stock certificate, and every bond, note or other evidence of indebtedness, of a public utility, not payable within twelve months issued without an order of the Commission authorizing the same then in effect shall be void, unless issued upon the authority of any articles of incorporation or amendments thereto, and of a vote of the stockholders or directors, filed and taken before January 1, 1914, and likewise all stock and every stock certificate, and every bond, note or other evidence of indebtedness of a public utility not payable within 12 months, issued with the authorization of the Commission, but not conforming in its provisions to the provisions, if any, which it is required by the order of authorization of the Commission to contain, shall be void; but no failure in any other respect to comply with the terms or conditions of the order of authorization of the Commission shall render void any stock or stock certificate, or any bond, note or other evidence of indebtedness, except as to a corporation or person taking the same with notice of the failure to comply with the order of the Commission.
220 ILCS 5/6-104