It has been suggested that a paradigm shift is taking place, from the old model of product innovation based on in-house R&D, to a new model based on the intensive use of external sources (search depth). We test this using Eurostat CIS4 data for 40 sectors in 18 European countries. The findings...

This paper analyses the determinants of technological diversification for small innovative companies. Using patent data from the PATSTAT database for the period between 1990 and 2006, we explore technological diversification through a panel data set comprising 811 UK based serial innovators...