>Usually it's to defend against another company using a "blocking patent" by pursuing you for infringing their patent which is built upon the thing you patented, doing the next step which was always obvious to you.
Would be pretty hard to sue someone for practicing a patent that cites that person in prior art who concurrently was inventing the same thing and would say how obvious it ones. You're going to tell me it's not so easy, but you completely made up some really narrow and specific situation anyway...
>Not for exclusivity.
It's only your right to exclude others from it that gives a patent any defense... it's all about exclusivity. That's the fundamental nature of property law.
Would be pretty hard to sue someone for practicing a patent that cites that person in prior art who concurrently was inventing the same thing and would say how obvious it ones. You're going to tell me it's not so easy, but you completely made up some really narrow and specific situation anyway...
>Not for exclusivity.
It's only your right to exclude others from it that gives a patent any defense... it's all about exclusivity. That's the fundamental nature of property law.