@"defend against legal attack"
900M here, 4.9M there, how much more do they need to spend to be protected?
All this buying patents to protect from patent legal attacks makes me wonder, how many millions or even billions does any company (or more to the point, inventor) need to spend these days to be relatively safe from patent legal attack?
All the money Google need to spend on patents looks like a very big example of how badly the Patent System has got broken. No small company could ever hope to protect itself like this, so patents definitely cannot protect a lone poor or even relatively rich inventor. (Even someone with £1M in the bank would struggle). So it looks like the patent system requires a billion+ to have a hope of being protected now.
That isn't even close to the original intention of patents.