Abstract
Thierry Laronde basing on the statement of the social utility of ideas, to denounce the policy of the European Office of Patents in which he blames for accepting in facts, software patenting and limit so the social circulation of ideas. Indeed in the case of the software, originality, only patentable, does not lie as in the theory as in an implementation by a soft-engineer which participates in a chain in which the assertion of an individual right is difficult even impossible. A contrario GNU’s General Public Licence facilitates the distribution of the knowledge’s distribution, by the spread and the re-use of the code even though it does not offer any guarantee against the patenting of ideas