“…Indeed, as regards the former (technology exploitation), larger companies seem to have a greater technology portfolio than smaller companies and hence have a wider technological knowledge potentially suitable for commercialisation; as regards the latter (technology exploration), larger firms seem unable to completely rely on internal activities because of the diversity of the technological knowledge that they use. In general (i.e., considering OI in its wholeness composed of both the two types of technological transactions), the fact that larger firms seem to drive the opening of the innovation process can be justified by the more systematic approach they have in their innovation processes (Lichtenthaler, 2008) and the larger resources they possess with respect to small and medium enterprises (De Backer et al, 2008;Lichtenthaler, 2008;van de Vrande et al, 2008). In addition, according to Lichtenthaler (2008), it should be noted that the effect of firms' size seems to be stronger in the case of technology commercialisation than in technology exploration, in that commercialisation is rather a newer phenomena than acquisition: as the external mode of technology exploitation has become a broader trend only in recent years, it is still driven by large pioneering firms, while the acquisition of external technology, by contrast, is distributed more evenly across firms of different size.…”