AN ANALYSIS OF INNOVATION STRATEGIES AND INDUSTRIAL DIFFERENTIATION THROUGH PATENT APPLICATIONS - THE CASE OF PLANT BIOTECHNOLOGY

The main result of this study of patent applications in plant biotechn ology showed that a low level of technological differentiation explain s a weak regime of appropriability. We consequently propose a complete reversal compared with traditional approaches. Whereas patents are ge nerally considered as a decisive factor, we suggest that alone they ca nnot induce a dynamic of technological differentiation. It is because they do not play the role attributed to them by Kitch (the co-ordinati on of actors' plans) that they do not fulfil the function traditionall y allocated to them (an incentive to innovation). Given this relation of weak appropriability to a low level of technological differentiatio n, the dynamics of plant biotechnology seem to be more closely related to the introduction of new tools into specific fields of application via vertical integration, than to the autonomous development of generi c technologies. Industrial organization is seen as being characterized by a dynamic of differentiated oligopoly, with a high lever of vertic al integration rather than intense horizontal specialization and quasi -commercial relations between firms.