The typical method of filing a patent application is using the USPTO's Patent Center Website. Navigate to the Patent Center portal and create a USPTO account.What can and cannot be patented? Utility patents can be obtained for any new, useful, and non-obvious process. The application process. It should take about 16 months from filing date for a response from the US Patent and Trademark Office. Explore our expert guide to patent filing in Chicago. Get practical tips and essential insights to protect your innovations effectively. Resources are available for Illinois residents to help inventors and entrepreneurs learn more about protecting their intellectual property. The Mark MUST BE IN USE IN ILLINOIS prior to registration with this office.