This article studies the relative impact on product innovation of R&D collaborations with universities, suppliers, customers, and competitors. It argues that each type of R&D collaboration differs in terms of the breadth of new knowledge provided to the firm and in the ease of access of this new...

Little attention has been devoted to the question of how late movers overcome first-mover advantage and catch up with incumbents. We examine the role in catch-up of late movers' optimal resource allocation between innovation and imitation. Building on Nelson and Winter's (1982) technology...