IP laws is a fiction. If the US authorities want to enforce rules like "you can't paint your car green because the green color has been patented" they can, but

IP laws is a fiction. If the US authorities want to enforce rules like "you can't paint your car green because the green color has been patented" they can, but I see no reason why other countries would adopt this nonsense. Besides, countries aren't governed by laws, they only have treaties and agreement between each other that they can enter and leave voluntarily.