In concept, the question of whether an inventive idea qualifies as patent-eligible subject matter doesn’t seem like it should be a difficult one. One needs only to ask whether such an inventive idea is directed to a new and useful process, machine, manufacture or composition of matter and not something that pre-empts a natural law, physical phenomena or abstract idea. However, in the realm of software and business method patents, the question has taken on a life of its own, particularly with regard to …