All patents abolished. Ideas are worthless once executed and it's ludicrous to own even someone else's idea even before it exists, if it so happens to be covered by your patent.

EDIT: IMHO I think patents can be good, but in some cases (especially software) it is too hard to draw a line between what's patentable and what's not. It is also highly subjective, market dependent, and far reaching in it's implications on preventing innovation if not done right.