linked fields. Our analysis uses 1.8 million U.S. patents and their citation properties to map the innovation network and its … strength. Past innovation network structures are calculated using citation patterns across technology classes during 1975 … predictive power on future innovation after 1995. This pattern is consistent with the idea that when there is more past upstream …

explain them. We then describe a theoretical framework of endogenous markups, innovation, and competition that can potentially … firms respond to a given concentration in the economy. The results highlight that a decline in knowledge diffusion between …