Key point, Google, Microsoft and Amazon are all US companies. Had they been non-US, they might still have been able to strike some patents down, but only *after* being destroyed (or at least hollowed out) by those patents. C.f. NTP's attack on RIM.
Key point, Google, Microsoft and Amazon are all US companies. Had they been non-US, they might still have been able to strike some patents down, but only *after* being destroyed (or at least hollowed out) by those patents. C.f. NTP's attack on RIM.