Ok I see what you are saying now, I thought you were saying the vendor in the first post was not sending out pirate licenses with their hardware.
Now how to tell, well that can be problematic and the only real way to know for sure is to get it checked against the database of purchased licenses.
A clue however is if it has a name and it is not your name then a good chance it is pirated. If it has a serial number then it may or may not be pirated and the only way to know for sure is to cross reference with the database so if anyone has suspicions about a licence they need to contact Scott at license@machsupport.com and ask if it is legitimate or not.
Hood