9.-
(2) Any of the following in particular shall not be regarded as an invention within the meaning of subsection (1):
(c) a scheme, rule or method for performing a mental act, playing a game or doing business, or a program for a computer,
(3) The provisions of subsection (2) shall exclude patentability of subject-matter or activities referred to in that subsection only to the extent to which a patent application or patent relates to such subject-matter or activities as such.