He invented and patented a number of new technologies that were later incorporated into Research in Motion's BlackBerry mobile email devices.
[3] In 1990 Campana invented a form of wireless push email and filed the first in a series of patent applications on it.
The Blackberry devices were commercially successful, but when Campana tried to license his patents to Research in Motion, they refused to pay a fee.
Campana also invented a wireless location technology that helps parents find their kids.
Most recently, on June 8, 2010, NTP filed patent infringement lawsuits against several smartphone companies such as Apple, Google, LG, and Microsoft.