The US Patent Office has released a new set of guidelines for judging patent eligiblity based upon the Supreme Court’s recent quartet of Bilski, Mayo, Myriad, and Alice. The guidelines do not carry the force of law but are designed to serve as a manual for examiners when determining eligibility.
The guidelines follow the same two-step analysis described in Mayo and Alice. And, although the two-step test was not applied directly in the cDNA case of Myriad, the guidelines suggest that the test is uniform across the subject matter areas. However, the particular examples show that the USPTO intends to be less aggressive at finding eligibility problems with products of nature or natural phenomenon as compared those directed toward abstract ideas.
It will take some time to digest these, but the info is below: