Earlier quoted context omitted.
I'm no lawyer but I feel like a company shouldn't have standing to contest a patent if they can't demonstrate damages, like a product losing sales because someone else is selling a competing product using technology under their patent. And "we paid for something and want ROI" are not damages. There's no legal right to profit from an investment. You gotta use it or lose it.
In this case though, licensing their code is their use of the product. Don't let your ire of patent trolls lump everyone together. I'm not saying MPEG/Via-LA are angels, but they own rights to code that is used by millions while holding active licenses with people using that code.
The patent "business" is just garbage. A company full of lawyers collecting rents on mathematical algorithms does not "promote the progress of science and useful arts".
I think there is still a place for patents, but most of the time they seem to just stifle innovation and increase the cost of everything.