Patents shouldn't exist at all, IMO.
"But they make innovation thrive by providing an incentive to blah blah blah".
Not anymore in this day and age. Money comes mostly from the government, anyway, and plenty of really smart researchers would just be happy to put out their stuff out for the public benefit (and already do, btw). Even if they didn't the current patent system ends up giving them like 1% of profits, lol.
The business case for "but I want to protect the market I created" can be sufficiently solved with trade secrets and trademarks. Patents sound nice in theory, but in practice they only hinder innovation, the opposite of what they're supposed to do.