Why someone would want to name their band a derogatory racial slur or something like this is beyond me, but when the USPTO said ‘no’, a band sued.
For those of you who may not know, the Supreme Court is our highest judiciary, and the D.C. court of appeals operates directly underneath. In the United States, all federal courts have jurisdiction over all copyright, trademark, and patent laws within our country. Individual states (like New York, or Texas, or California) within the country do not deal with copyright issues.
Here’s what the Supreme Court decided: