IBM is a patent troll. They'll come in and threaten to sue on a patent, and then indicate they have a zillion patents, that they'll 'find some infringement' and

IBM is a patent troll. They'll come in and threaten to sue on a patent, and then indicate they have a zillion patents, that they'll 'find some infringement' and then exhort. They have a cadre of lawyers incented to do this. It's fair that people can defend their IP, but it goes too far in many cases.