"The In re Bilski (545 F.3d 943 [Fed. Cir. 2008]; here’s a PDF of the decision) court decision placed significant new limits on so-called “process” or “business method” patents, which possible implications for many software patents. Well, I just received an e-mail from Joel Miller of the ABA Intellectual Property Law Committee (of which I’m a member) that include two decisions: a US District Court decision (Classen v. Biogen et al.) invalidating several patented methods for “evaluating and improving the safety of immunization schedules”, and a US Federal Court of Appeals ruling upholding that decision based on In re Bilski."