IANAL/P, but why can't we just pass a law stating that "the patent is not being used for anything" is a valid patent suit defense?
I imagine this would instantly defuse patent trolling while having no collateral damage to businesseses that actually use their patents to defend investments (which is supposed to be the whole point).
Is the only reason we're not seeing such a law because trolling has a powerful lobby, or am I grossly oversimplifying?