There has been some criticism over their rather aggressive use of trademark to fake "patent" their designs after their original design patents had expired.

I also heard (so, unverified) that users of 3d-printers has gotten some of that attention.

So, great company to work with, great products, but clearly a bit overreaching in the legal department. How evil that makes them... meh, at least they are not trying to patent something that they themselves never created. Still wrong through.