1) If the Patent Office grant a patent when they shouldn't have, and Sony lose the case, can they sue the Patent Office and cast all costs onto them? After all, if the PO hadn't granted the patent and pointed out the prior patent, Sony would have done things differently.
Thank god they can't. Otherwise, you know what it means: the taxpayers picking up the bill.
I don't know why people get so worked up whenever a bogus patent suit comes up. It's not old grandma who's getting mugged here. These are multi-billion dollar companies we're talking about. They're more than able to defend themselves. So what if there're mistakes? No system is perfect, and here, it's a good thing that the cost inflicted is borne by those most capable of bearing it, and who have, moreover, benefited hugely from the system.