If only defending a patent suit was as simple as finding the prior art. Most patent trolls will happily invite you to take your prior art claim to court, knowing full well you can't afford to do it.
> Most patent trolls will happily invite you to take your prior art claim to court If you (the defendant) has found good prior art (either by this method or some other method), you can also file for a re-examination with the USPTO using that new prior art. Still somewhat expensive, but significantly less expensive than going to court, and if the patent is found invalid it is just as dead.
Or is the re examination all that much rigorous and accurate?