A SFLC press release includes:
In response to a formal request filed by the Software Freedom Law Center (SFLC), the United States Patent and Trademark Office (USPTO) today ordered re-examination of the e-learning patent owned by Blackboard Inc.
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A re-examination of this type usually takes one or two years to complete. Roughly 70% of re-examinations are successful in having a patent narrowed or completely revoked.