What is a Trademark? This page provides information on the types of patents and types of patent applications, and the examination process.A trademark search is a search for all companies or persons using your mark or similar marks in the marketplace. The process of filing a patent in Washington State is similar to filing a patent anywhere in the United States. The U.S. Patent and Trademark Office (USPTO) is the agency responsible for granting U.S. patents and registering trademarks. What Are Trademarks? While trademarks, patents and copyrights are all forms of intellectual property, they are quite different from each other. The mission of the U.S. Patent and Trademark Office (USPTO) is to drive U.S. innovation, inclusive capitalism, and global competitiveness. Getting a patent in Washington is the same as any other state. The patent application is filed with the United States Patent and Trademark Office (USPTO).