It's more like this. Orthoclear was being sued by Align for multiple patent infringements. After months of pretrial work, Orthoclear saw that they were going to lose and decided not to waste anymore money on going to trial. So, Align settled with Orthoclear. The settlement involved Align purchasing all of Orthoclear's patents, a cash payment of $20 million, and they assumed all of Orthoclear's patients (who will recieve continued treatment at no additional charge).
Goodbye Orthoclear.