Why Bilski Re-Affirms the Patent-Eligibility of Software
Even a very conservative reading of the opinions indicates that the Justices intended to leave the status of software as patent-eligible subject matter unchanged, and for further refinements to be worked out by the lower courts and USPTO. A more liberal reading indicates an intent to enable the scope of patent-eligible subject matter to expand in light of technological developments. In either case, the decision in Bilski fails to provide patent examiners and defendants in patent cases with any substantial new ammunition for rendering software patent claims unpatentable or invalid for lack of patentable subject matter, and weakens the ammunition previously in their arsenals. Therefore, despite any ambiguities which may exist in the language of the decision, the practical effect of Bilski will almost certainly be to bolster the patent-eligibility of software both in patent prosecution and in litigation in the U.S.