Google has a patent service (if you don't already know). Here are some example URLs: http://www.google.com/patents/US1 http://www.google.com/patents/US99 http://www.google.com/patents/US101 ...
Was there a landmark controversial software patent of a trivial idea before the “XOR flashing cursor” patent?
Currently the majority of bad press about trivial software patents is all centred around Apple and other smartphone industry players. A few years ago it was the Amazon "1-click" patent everybody was ...