Innovation is part idea generation and part development. We build a model of “innovating-bydoing,” whereby ideas come to practitioners. Successful innovation requires that practitioners’ideas be developed through costly effort. Our model nests existing theories of laboratory researchand...

Innovation is part idea generation and part development. We build a model of “innovating-by-doing,” whereby ideas come to practitioners. Successful innovation requires that practitioners’ ideas be developed through costly effort. Our model nests existing theories of laboratory research and...

This paper provides a first comprehensive quantitative analysis of optimal patent policy in the global economy. We introduce a new framework, which combines trade and growth theory into a tractable tool for quantitative research. Our application delivers three main results. First, the potential...