RCW 19.77 sets out Washington's trademark registration law. Washington's law is modeled after the Model State Trademark Bill (MSTB).How do I file a Trademark Registration? See RCW 19.77 for guidance and what is required to register a Trademark in the State of Washington. If you're an inventor or small business owner, you may be eligible for free legal assistance in preparing and filing a patent application. For information about Corporate Names and State Trademarks Contact: Office of the Secretary of State Corporations and Charities Division To apply for a patent, you must file an application and pay required fees. Yes, it is possible to obtain a patent without a lawyer, but there are important considerations to keep in mind. Usually, you can get free legal assistance for your patent from the Patent Pro Bono Program. Have an actual invention, not just an idea.