What do you have to do to establish trademark rights in the United States?

The most secure thing to do is to apply for a trademark.

You have to remember, your trademark is what sets you apart from your competitors and ends up being a valuable part of your brand. You should absolutely protect it.

Trademark Law Firm in Vietnam 

Of course, in the US, you don’t necessarily have to file for a trademark if you can prove that you’ve used it in the marketplace. However, it’s not always so simple to prove this, so your best option moving forward is to file for the application. There will be a review period and then you will be registered for 10 years. You’ll need to renew it after that.

A few things to keep in mind

-There are strict guidelines and deadlines with the registration process.

--The USPTO doesn’t give refunds if you make mistakes on the application.

Your best bet is to hire a skilled trademark attorney to help you through the process.

A trademark attorney can

-Complete a thorough trademark search

-Fill out the application

-Ensure that deadlines are met

-Guarantee that the process has been completed properly

Source: Raad Ahmed - Quora