This page provides information on the types of patents and types of patent applications, and the examination process. The process of filing a patent in Washington State is similar to filing a patent anywhere in the United States.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). A stepbystep overview of a patent application and maintenance process. The five stages of a patent process. Utility and plant patents only. Provides a filing date and use of "patent pending". Learn about Patents on Washington today. Quickly find answers to your Patents questions with the help of a local lawyer.