The subject-matter of Claim 2 according to the Appellant's main request is thus distinguished over the explicit disclosure in document (D2) in that:(a) the one-conduction layer (21) is lightly doped;(b) the dummy gate (31) is made of only one material;(c) the layer (32) deposited in order to form the side wall films (33) is made of a second material, i.e. a material different from that of the dumm