"Notes of a teleconference between Blackboard Inc. and the Association for Learning , Technology (ALT) – 16.00 to 17.50 UK time, 23 August 2006"
The teleconference highlights the patent issue raised by Blackboard on Desire2Learn for patent infringement
(http://www.alt.ac.uk/docs/ALT_Blackboard_20060823.pdf)
For a detailed background click the following hyperlink
oer4highereducation
Title : FOSS for HE- Patent issue w.r.t LMS