Federation Supreme Court

From Memory Alpha, the free Star Trek reference.

The Supreme Court of the United Federation of Planets (or, simply, Federation Supreme Court) is the highest court in the Federation.

When Richard Bashir found out that the secret of his son's genetic enhancments had gotten out, he said he'd "arrange legal counsel and . . . fight this all the way to the Federation Supreme Court". (DS9: "Doctor Bashir, I Presume")

Based on Bashir's statement, this court has final and unappealable appellate jurisdiction over Federation laws. This may or may not extend to Starfleet regulations. When Bashir stated that he'd fight it "all the way" he may have been engaging in hyperbole, with the court actually unable to hear the case due to jurisdictional or procedural issues.