Why aren't more software patterns patented? For example, the Observer pattern, Model View Controller, Active Record, etc.? These are patterns that pop up naturally while coding that seem on par with the 'in app purchase' pattern (if I can call it that). Why haven't the trolls patented more of our building blocks?
They are all patented, you just have not seen the relevant patents (or if you had seen them you would not be able to understand them).
There was a story not long ago about how somebody had patented doubly linked lists (or maybe how to traverse a double linked list, I can't remember the details, but it was just as obvious).
