“…Controlling for the tenure of the last product is also useful to take into consideration the degree of newness and complexity of the product portfolio (Cefis and Marsili, 2011;Loof and Heshmati, 2006). Some new products are characterised by short product lifecycles, as in the case of market-driven innovations that are required by the market (Barlet et al, 2000), or innovations in hightech industries, where old products signal out-of-date and superseded designs (Klepper, 1996;Burgel et al, 2002;Gopalakrishnan and Bierly, 2006). On the contrary, very innovative products may be accepted by the market at a slow pace (Barlet et al, 2000), thus making the product's lifecycle curve longer and shifted rightwards, with a startup phase abnormally extended, and a growth phase delayed in time.…”