The U.S. Supreme Court ruled in favor of the U.S. Patent and Trademark Office on Thursday in its legal battle with an attorney who sought to register the slogan “Trump Too Small” as a federal trademark.

In its decision, the high court upheld the federal Lanham Act’s long-standing bar against registering the names of living people as federal trademarks without their consent. The court rejected petitioner Steve Elster’s argument that Section 2(c) of the act violates the First Amendment.