What are the benefits of using a trademark in the USA before it is officially registered?

Yes, there are benefits to using a trademark before it's officially registered. In the U.S., you can use unregistered trademarks for your products and services. The law recognizes the first person to use a trademark or the first to apply for its registration as the rightful owner. You also gain common law rights by actually using the trademark. However, keep in mind that some products, like cigarettes and drugs, need to meet regulations before they can be sold.