1. U.S. Trademark Registrar: A U.S. Trademark Registrar is a professional designated by the U.S. Trademark Office. He is responsible for helping companies apply for trademark registration and ensuring the safety of trademarks.

2. Trademark registration services: The U.S. Trademark Registrar can provide enterprises with effective trademark registration services and trademark dispute resolution solutions. The U.S. Trademark Registrar can help companies apply for trademark registration and ensure the validity of trademark registration.