Since the cost of requesting a re-ex is not an issue for the big companies, they could care less if prior art was significant and may cite any electronic device just to have the USPTO go through the motions before being denied once again. But aren't the patents VALID until the PTO says they're not (which hasn't happened anywhere on the planet)? I would hope that the courts can see through these delay tactics and decide using the current official status of the validity of the patents. The infringers should be paying for valid patents until proven otherwise and I think the courts will agree given the history of the re-ex's here and abroad. IMHO

GLTAL