"A legal center is trying to overturn a patent it says threatens three open-source educational projects, a sign of the tension between patent holders and the collaborative programming community.
"The Software Freedom Law Center said Thursday that it has asked the U.S. Patent Office to re-examine a patent awarded to education software company Blackboard. It claims that the patent is bogus and could undermine three open-source education software projects it represents--Sakai, Moodle and ATutor..."
