"Thomson Reuters, maker of the EndNote bibliographic software, is suing George Mason University and the State of Virginia...The issue is Zotero, an open source bibliographic tool that appears to rapidly increase its market share, as it is much lighter, platform independent, browser plugable and free. Of course, this is not the official reason, Thomson Reuters rather argues that Zotero developers reversed* engineered EndNote to allow Zotero to import EndNote files."
More here:
http://www.againstmonopoly.org/index.php?perm=1253 (Although the story's doing the rounds now, even making it to
boingfeed.)
*That 'd' is superfluous, isn't it?