# 17-020/VII (2017-02-10)

Jeroen Hinloopen, University of Amsterdam, The Netherlands; Grega Smrkolj, Newcastle University, United Kingdom; Florian Wagener, University of Amsterdam, The Netherlands
Antitrust policy, Bifurcations, Collusion, R&D cooperatives, Spillovers
JEL codes:
D43, D92, L13, L41, O31, O38

We present a continuous-time generalization of the seminal R&D model of d'Aspremont and Jacquemin (The American Economic Review 78(5): 1133–1137, 1988) to examine the trade-off between the benefits of allowing firms to cooperate in R&D and the corresponding increased potential for product market collusion. We consider all trajectories that are candidates for an optimal solution as well as initial marginal cost levels that exceed the choke price. Firms that collude develop further a wider range of initial technologies, pursue innovations more quickly, and are less likely to abandon a technology. Product market collusion could thus yield higher total surplus.