The next step in the Blackboard Patent lawsuit has been taken, with Blackboard filing a document describing what it is they think the patent covers and Desire2Learn filing a response to that document. The thrust of D2L's response is that "Blackboard has acknowledged that the small innovation it contends the 138 Patent added to the field relates solely to the concept of using 'multiple predetermined user roles' to provide security to the systems" and cites statements from Blackboard to that effect. Blackboard, meanwhile, focuses on the 'roles' aspect of the LMS, but attempts to construe that as widely as possible. It is also worth noting that D2L cites the Wikipedia History of VLEs page in its response. More from Michael Feldstein.
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