Get rich quick! Sue for fun and profit! Sound like a hoax? Only time will tell. Several enterprising attorneys and other private parties are giving it a try by exploiting an arcane provision of the Patent Act known as the false marking statute. In this article, we briefly examine the history of the false marking statute and qui tam laws, the recent explosion in false marking actions (including several suits based on marking with expired patent numbers), and some constitutional problems posed by these actions...