On: Bill would force patent trolls to pay defendants' legal bills

[Sandman]

Those that were used in the lawsuit, yes, but they'd probably have other patents as well, and there would be no reason to consider them worthless.

[endianswap → Sandman]

Most patent trolls such as Intellectual Ventures set up a shell company for each lawsuit, essentially (or group of lawsuits if they're targetting multiple companies) so they only really have the patents used in the case they'd be losing to sell.