Blackboard: Spoke too soon?
Sunday, March 30th, 2008Alfred Essa posted this tidbit today:
An Important Correction to the Blackboard Patent Story
A number of us, including this blog, have gotten this story wrong. It’s time for a correction.
The USPTO has NOT invalidated the Blackboard patent. Instead the USPTO is proposing to invalidate the patent and has issued some preliminary documents for review and comment. [...]