Alfred 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. At the end of the day the USPTO still might uphold the patent as valid.
Let’s hope this is just a matter of semantics, and that the USPTO will continue along their current path towards invalidating Blackboard’s patents. *fingers crossed*!