In this article, we study the possibility to describe several technological regimes with an unique model of semi-endogenous growth based on innovation. Two R&D sectors are modelised: one aims to vertically innovate, another one horizontally. References to alternative litteratures dealing with...

There is a well-known tradeoff between dynamic efficacy and static inefficiency created by the patent system existence. In this article, we stress on the possibility to realize an arbitrage between these two effects by setting the novelty requirement, or height of the patent. We integrate into...