Ah, so these freaks already managed to make claims. I hope someone will work on busting them. I highly doubt HLS is in any better shape in this regard.

And Columbia University is in that patent trolls list. Disgusting.

UPDATE:

Going through that site, I found their attempt to leech on VC-1: http://www.mpegla.com/main/programs/VC1/Documents/vc-1-att1....

And they list Microsoft there, which is strange, since MS are part of Alliance for Open Media which is an antithesis of this trolling cartel. Either MS are sitting on both chairs, or MPEGLA are trying to fool everyone.