The Trademark Act of 1946 is a United States federal law that protects trademarks and service marks registered with the United States Patent and Trademark Office. It is the primary federal statute governing trademarks and service marks in the United States and provides for the registration and protection of trademarks and service marks used in
From Wikipedia
The Lanham (Trademark) Act (Pub. L. 79–489, 60 Stat. 427, enacted July 5, 1946, codified at 15 U.S.C. § 1051 et seq. is the primary federal statute governing trademark law in the United States.