Software patents need to be banned entirely and this is a perfect example of why. Google's ideal outcome is that no other browser would have tabs, making them inferior to the point of not being usable. That is literally their desired outcome from filing this patent, and indeed it is the basis for every software patent. You can see just from the list of patents cited that Microsoft and many other companies have all taken out patents on obvious incremental design improvements on browser GUIs, and the reason that they do it is to gather ammo for some theoretical ultimate showdown that they imagine will end with their browser as the only remaining legal product. None of them are dealing in good faith, and this should confirm forever that Google no longer subscribes to "don't be evil" as a behavioral maxim.