Lanham Act

For the 1940 Lanham Act building wartime community facilities see New Deal#Wartime welfare projects

The Lanham (Trademark) Act (Pub.L. 79–489, 60 Stat. 427, enacted July 5, 1946, codified at 15 U.S.C. § 1051 et seq. (15 U.S.C. ch. 22)) is the primary federal trademark statute of law in the United States. The Act prohibits a number of activities, including trademark infringement, trademark dilution, and false advertising.

Named for Representative Fritz G. Lanham of Texas, the Act was passed on July 5, 1946, and signed into law by President Harry Truman, taking effect "one year from its enactment", on July 6, 1947. In rare circumstances, a conflict will arise between trademarks that have been in use since before the Lanham Act went into effect, thus requiring the courts to examine the dispute according to the trademark act that existed before the Lanham Act.

The Act has been amended several times since its enactment. Its impact was significantly enhanced by the Trademark Counterfeiting Act of 1984, which made the intentional use of a counterfeit trademark or the unauthorized use of a counterfeit trademark an offense under Title 18 of the United States Code, and enhanced enforcement remedies through the use of ex parte seizures and the award of treble profits or damages (whichever is greater).

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