"The Bilski decision, then, is a clear signal that the pendulum has begun to swing back toward tighter limits on software and business patents. However, it remains to be seen how far the court will go in this direction. Bilski was a relatively easy case. The applicant made little effort to hide the fact that he was seeking to patent a mental process, something the Supreme Court has clearly said is not allowed. Therefore, the Federal Circuit’s rejection of this patent doesn’t tell us how it will rule when confronted with software or business method patents that are tied more directly to a physical machine or a transformation of matter."