No doubt for me that intellectual property must be protected. I am not a lawyer, so I learn a lot from these posts, thanks. I believe the issue has something to do with the limit of what can be protected or not. It seems to me that in various subjects, more can be patented in the US than in the rest of the world, which, as the example seems to show, does not give necessarily any protection to the one who owns the patent. There has been a long debate in Europe about software patents, for example (I cannot even say what is now the current status). Legislation differ depending on what part of the world you are, and therefore no general conclusion can be drawn from the outcome of any particular justice decision.
If one takes the example of car industry, it is clear that successful look and feel are copied (red color of Ferraris, BMW style, etc ..). In many cases, there are no legal grounds to sue, and even if there are, the copied one does not engage itself into it.
As noted by many posts, there is a specific antagonism between Apple and Samsung which explain the energy they put into these disputes. I believe all Apple competitors will be cut into tiny bits in a near future, with the exception of Samsung. Although these two companies differ on many points, they strangely have one point in common, in their common complete disregard of planet finance opinion, which give them the unique advantage of conducting long term strategies.
Their fight will be an epic battle, for sure ....