Xiph.org's "Monty" on codecs and patents

You're sued by a patent-troll that is single-purpose, produce nothing, and own nothing other than the patent they are suing you over. Thus even if you could manage, after a long and expensive battle, to get them convicted of something or other, it'd not help.

They'd simply fold. A judgement awarding you costs, and also some kinda damages, is worth nothing when the judgement is against a company that holds nothing of value.