765 ILCS 1036/25
Upon compliance by the applicant with the requirements of this Act, the Secretary shall cause a certificate of registration to be issued and delivered to the applicant. The certificate of registration shall be issued under the signature of the Secretary and the Seal of the State, and it shall show the name and business address and, if a corporation, the state of incorporation, or if a partnership, the state in which the partnership is organized and the name of one of the general partners, or if a limited liability company, the state in which the company is organized, of the person claiming ownership of the mark, the date claimed for the first use of the mark anywhere and the date claimed for the first use of the mark in this State, the class of goods or services and a description of the goods or services on or in connection with which the mark is used, a reproduction of the mark, the registration date and the term of the registration.
Any certificate of registration issued by the Secretary under this Act or a copy thereof duly certified by the Secretary shall be admissible in evidence as competent and sufficient proof of the registration of a mark in any actions or judicial proceedings in any court of this State.
765 ILCS 1036/25