Hm... how come Desire2Learn hasn't been sued by Blackboard yet? Usually, as soon as a uni stops switches away to use a competing course management software, the

Hm... how come Desire2Learn hasn't been sued by Blackboard yet? Usually, as soon as a uni stops switches away to use a competing course management software, the competitor get sued based on the LMS patent: http://patft.uspto.gov/netacgi/nph-Parser?Sect1=PTO1&Sect2=HITOFF&d=PALL&p=1&u=%2Fnetahtml%2FPTO%2Fsrchnum.htm&r=1&f=G&l=50&s1=6988138.PN.&OS=PN/6988138&RS=PN/6988138 http://patft.uspto.gov/netacgi/nph-Parser?Sect1=PTO1&Sect2=H... UPDATE: they //did// get sued, but won, and the above patent is invalid now. Way to go! http://en.wikipedia.org/wiki/Blackboard_Inc.#Legal_matters http://en.wikipedia.org/wiki/Blackboard_Inc.#Legal_matters