stand up in court
To prove acceptable or admissible by a judge in a court trial. He's suing me for defamation, but there's no way it will stand up in court. All of your evidence is circumstantial—you don't have anything on me that will stand up in court!
stand up in court
[for a case] to survive a test in a court of law. Do you think that this case will stand up in court? These charges will never stand up in court. They are too vague.