%S TSE Working Paper %A Bruno Jullien %A Yassine Lefouili %T Mergers and investments in new products %X We investigate the impact of a horizontal merger between two competitors on their incentives to invest in R&D that generates new products. We show that a merger raises the incentives to innovate if and only if the merged entity’s incremental gain from a second innovation is greater than the individual profit of a firm when both firms innovate in the no-merger scenario. Applying this result to the Hotelling model, we find that a merger spurs innovation if the degree of product differentiation is not too high, and show that a merger can be beneficial to consumers. %K Horizontal Mergers, Product Innovation, R&D Investments. %B TSE Working Paper %V 18-949 %D 2018 %C Toulouse %I TSE Working Paper %L publications26230