To me it's not the length of the patents, but the granting of patents that shouldn't have been done in the first place. Like the countless patents that follow the "take Patent A and add 'with computer' on it to create Patent B" formula.
Slide to unlock. Granted to Apple, then invalidated.
Rounded rectangles. Granted to Apple. (Freeway signs had this for decades.)
Jiggle mode to move or delete apps. Granted to Apple.
These are just a few of the crazy software UI patents that were granted.
Can anyone think of any more?