The unanimous decision will also likely preserve the trademarked and controversial name of the Redskins, Washington's pro-football team.
In recent years, such trademarked names have come under attack as racially offensive. Since 1946, the U.S. trademark law has included a provision that barred the government from registering trademarks that may "disparage" people or groups.
The case of the Slants raised questions about government's efforts to police names that may be offensive to one group or another. Simon Tam, the leader of the Portland, Ore.-based band, said he chose the name to make fun of a word that had been used as a slur against Asians, and thereby to "drain" it of any derogatory impact, as the court put it.
An examiner at the U.S. Patent and Trademark Office did not share in the joke and refused Tam's request to trademark the band's name. The examiner cited dictionaries that defined "slants" or "slant-eyes" as a derogatory or offensive term.
Rather than second-guess that judgment, the Supreme Court instead struck down the part of the law that called for making such assessments. “We now hold that this provision violates the Free Speech Clause of the 1st Amendment,” Justice
The legal dispute turned on the nature of trademarks. Are they the words of a private person, or are they official words being spoken and endorsed by the government?
Two years ago, in a somewhat similar case, the high court ruled that specialty license plates represent the speech of the government, not the car owner. Therefore the state of Texas could refuse a request from the Sons of Confederate Vets to issue a license plate featuring a Confederate battle flag. By a 5-4 vote, the court upheld the state's decision and rejected the free-speech claim from the Sons of Confederate Vets.
But in Monday's opinion, the justices decided that "trademarks are private, not government, speech."
Alito said that trademarks historically were used by businesses to identify their products. People and companies can seek to register their trademarks with the federal office. And doing so gives them extra legal protection against others using the same mark.
But registering the trademark does not convert it into the government's message, he said. And if so, the government has no authority to discriminate against some words and messages that it finds troubling.
"We have said time and time again that the 'public expression of ideas may not be prohibited merely because the ideas are themselves offensive to some of their hearers,'" Alito said in the case of Matal vs. Tam.
Alito worried that if the court were to uphold the government's power to deny trademarks in this case, it might suggest the government also could refuse to issue copyrights for books whose message was deemed offensive.
The Redskins football team had been in danger of losing its trademark protection. The federal office and a federal judge said the team should have its trademark revoked because the name was offensive to Native Americans. But the team had appealed, and it looks sure to prevail after Monday's ruling.
Most experts in trademark law welcomed the decision. "It "makes sense in a lot of ways. Registering a trademark does not mean that word or group of words is government speech," said Roy Gutterman, a Syracuse University law professor.
But others saw potential for problems. "It seems this decision will indeed open the floodgates to applications for all sorts of potentially offensive and hateful marks," said Lisa Simpson, a New York lawyer who specializes in intellectual property law. "While this may be right under the 1st Amendment, it seems the responsibility will now pass to the public. And so it will be up to consumers to reject the most hateful of these marks and slogans."
In other rulings Monday, the court:
-- Threw out most of a nationwide lawsuit filed in California from plaintiffs who sued over the blood-thinning drug Plavix. Only 86 of the more than 600 plaintiffs live in California, so the state does not qualify as the proper forum for deciding all these cases, the court said in an 8-1 ruling in Bristol-Myers Squibb vs. Superior Court of California. The court said the suit should be brought in New York, where the company has corporate offices, in Delaware, where it is incorporated, or be split into several suits. In dissent, Justice
-- Struck down on free-speech grounds an unusual North Carolina law that made it a crime for a registered sex offender to post any message on a website, including Facebook or Twitter, that might be seen by minors. Lester Packingham, who had pleaded guilty in 2002 to having sex with a teenage girl, was charged with violating the law when he posted a message on his Facebook page that said "God is good" after a traffic ticket was dismissed. In an 8-0 ruling in Packingham vs. North Carolina, the justices said the law was too broad.
-- Ruled 5-4 for an Alabama death row inmate because he was not provided an "independent" mental health expert when he was tried 31 years ago. (McWilliams vs. Dunn)
-- Threw out most of a post 9/11 lawsuit against top U.S. officials, including then-Atty. Gen. John Ashcroft and then-FBI Director
On Twitter: DavidGSavage
2:45 p.m.: This story was updated with additional reaction and other court rulings released Monday.