I would not allow private companies to patent the way they are. Monsanto is the worse. They are actually trying to patent the basic genes for the pig. Meaning that anytime you have a litter you have to send them a royalty.
Just like how they send out scouts to tresspass property and take samples of crops to sue innocent farmers that THEY contaminated their fields, one day they will do it to all if not contained.
No company should be allowed to corner any market with dirty tactics. Espicially one as important as the food market.