"Protecting Your Trademark"(PDF). USPTO. United States Patent & Trademark Office. August 2019. p. 11. Archived from the original(PDF) on November 30, 2019. Retrieved October 9, 2019.
"Protecting Your Trademark"(PDF). USPTO. United States Patent & Trademark Office. August 2019. p. 11. Archived from the original(PDF) on November 30, 2019. Retrieved October 9, 2019.