"Although Bilski's claims were held unpatentably abstract, the Supreme Court has re-affirmed that the door to patent eligibility should remain broad and open. The Supreme Court has issued its opinion in Bilski v. Kappos. In the decision, the Supreme Court affirmed that Bilski’s risk-management method was not the type of innovation that may be patented. However, rather than using the Federal Circuit's "machine-or-transformation test", the court simply relied on prior precedent to find the claimed method unpatentably abstract. Justice Kennedy authored the majority opinion. Justices Breyer and Stevens both wrote concurring opinions. Business as Usual: In general, the opinion offers no clarity or aid for those tasked with determining whether a particular innovation falls within Section 101. The opinion provides no new lines to be avoided. Rather, the outcome from the decision might be best stated as "business as usual.""
Source: Patently-O: http://www.patentlyo.com/patent/2010/06/bilski-v-kappos-business-methods-out-software-still-patentable.html
