– Invention-Con San Jose Trademark Basics. Learn how to trademark your logo with this comprehensive guide.File a trademark application and other documents online through TEAS. "You fill out the application. " After indicating the trademark you want, "You have to indicate what the goods and services class is. You must complete a separate Application if the mark is both a Trademark and a Service Mark. •. Correct Placement: Place the trademark symbol next to the specific mark you are claiming as a trademark, whether it's a word, phrase, logo, or symbol. Both California and federal law protect the use of trademarks in commerce. Review existing registered trademarks that could be similar to your logo design. Each aspect of your brand will require a different trademark registration.