Regardless of your location, you will need to contact the U.S. Patent and Trademark office to fill out an application for a patent. Online through the USPTO, you can also do research and make sure that no one else already has a patent for whatever you are applying for. Conducting this search will save you a lot of time and money down the line. If you would like to fill out an application for a patent, you will need to go to the U.S. Patent and Trademark Office. Before filling out an application, you should do a search to make sure no one else has the patent already. If possible, you might hire a lawyer to assist you.