Indeed. RIM and Desire2Learn (both Canadian) have both been hit in the last few years with seemingly frivolous claims by litigious US companies. Apparently, it cost RIM some $612 million to settle with a patent troll [http://en.wikipedia.org/wiki/NTP,_Inc. (edit: copy and paste, clicking won't work)]. I don't remember what came of the D2L case, but I think it cost them quite a bit as well.