To download business forms, please visit the Publications section.
To search for companies formed or registered in Illinois, please visit the Corporate/LLC Search/Certificate of Good Standing section.
To search for limited partnerships and limited liability partnerships formed or registered in Illinois, please visit the LP/LLLP/LLP Database/Certificate of Existence section.
To search for marks registered in Illinois, please visit the Trademark/Servicemark Search section. For more information about trademarks and servicemarks, e-mail TM/SM@ILSOS.NET.
To inquire about the status of a registration, please include the type of business form and date submitted below.