The patents are written with the most broad and generic claims as possible first. Then the claims are re stated like 3 or 4 times, that would seem identical, but each re statement of them adds like one or two words of detail or specifics each time down. (So maybe claim 2 won’t stand up in court, but claim 23, a derivative of 2, will, the idea that you sue for infringement of as much as possible) I’ve submitted a patent before, and hardly Understood my own patent by the time the lawyer was done with it. But after really paying attention, I guess all the technical details are there. I think larger companies that aren’t specifically patent trolls patent as much as possible just for their own defense too.