When should you consider applying for a state trademark in Washington State? I find that, generally, it is not a valuable or necessary investment for a business. You want to be sure to register the tradenames or “dba”s (doing business as) for your business to obtain exclusive use of the tradename within the state. The trademark is a separate application that purports to protect your mark within the state. As the tradename provides exclusive use of the words, there may be some value to applying for a state trademark for your logo or imagery. That being said, if your business is participating in interstate commerce, you may have a mark that qualifies for federal registration. Federal registration offers significant benefits for your mark and is worthwhile if your brand meets the requirements. State registration in Washington can be beneficial in certain situations but is often not critical to protecting your mark.