In November 2010, the Indian Patent Office published the revised draft manual of patent practice and procedure, revising the draft manual 2008 – a version that remains a draft even today. In the revised manual, guidelines for the patentability of computer programs and related inventions have been revisited. Under the provision of Section 3(k) of the Patents Act, 1970, "mathematical or business methods or computer programs per se or algorithms" are not inventions and therefore, are unpatentable.