NORTH–SOUTH TRADE WITH MULTINATIONAL FIRMS AND INCREASING PRODUCT VARIETY*

We present a model of North–South trade with multinational firms and increasing product variety. Firms engage in innovative R&D to develop new product varieties in the North, and foreign affiliates of multinational firms engage in adaptive R&D to learn how to produce product varieties in the South. We find that a shift to stronger protection of intellectual property rights in the South induces foreign affiliates of multinational firms to increase their R&D expenditures, results in a faster rate of technology transfer within multinational firms, and increases long‐run consumer welfare in both regions.