The United States Patent and Trademark Office was established 1802 years, Is in charge of the United States patent and trademark application and approval procedures of the important agency, It's part of the U. S. Department of Commerce. USPTO Its main role is to provide patent protection to inventors and their related inventions, Trademark registration and intellectual property certificate.

　■　website: www. uspto. gov

　■　address: USPTO Madison Building, 600 Dulany Street, Alexandria, VA 22314 (Head office, Alexandria, Virginia)

　■　telephone: 1-800-786-9199 (Free business consultation) , Working time: Monday to Friday, Eastern Time in the morning 8: 30 Into the evening 8: 00, Except during U. S. holidays

　■　Email: ebc@uspto. gov