Blackboard Sues Patent Office in Dispute Over Course Software

Just when you thought the patent fight over course-management software couldn't get any more confusing, Blackboard Inc. went to federal court late last month to sue the U.S. Patent and Trademark Office, seeking to overturn a recent decision concerning Blackboard's controversial patent on course-management software.

The patent is being challenged on two fronts:

Front one is the courts. Blackboard previously sued its biggest commercial competitor, Desire2Learn, arguing that the

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