Search Results
Working Paper
Synergizing Ventures
Venture capital (VC) and growth are examined both empirically and theoretically. Empirically, VC-backed startups have higher early growth rates and initial patent quality than non-VC-backed ones. VC backing increases a startup's likelihood of reaching the right tails of the firm size and innovation distributions. Furthermore, outcomes are better for startups matched with more experienced venture capitalists. An endogenous growth model, where venture capitalists provide both expertise and financing for business startups, is constructed to match these facts. The presence of venture capital, the ...
Working Paper
Patents to Products: Product Innovation and Firm Dynamics
We study the relationship between patents and actual product innovation in the market, and how this relationship varies with firms’ market share. We use textual analysis to create a new data set that links patents to products of firms in the consumer goods sector. We find that patent filings are positively associated with subsequent product innovation by firms, but at least half of product innovation and growth comes from firms that never patent. We also find that market leaders use patents differently from followers. Market leaders have lower product innovation rates, though they rely on ...
Working Paper
Barriers to Creative Destruction: Large Firms and Nonproductive Strategies
This working paper reviews recent empirical evidence on large firms and nonproductivestrategies that hinder creative destruction and reallocation. The focus is on three types ofnonproductive strategies: political connections, nonproductive patenting, and anticompetitiveacquisitions. Across different contexts using granular micro data sets, we overwhelmingly see that asfirms gain market share, they increasingly rely on nonproductive strategies but reduce theirproductive, innovation-based strategies. I also discuss theoretical channels, aggregate implications,and potentials for some policies.
Working Paper
Lags, Leave-Outs and Fixed Effects
To avoid endogeneity, financial economists often construct regressors and/or instruments using values from other observations, with lagged and leave-out variables being common examples. We examine the use of such variables in common settings with fixed effects and show that it can induce bias and distort inference. We illustrate the severity of this problem via simulations and with patent examiner data. Even when scrambling the patent examiners, thus removing any instrument validity, the bias leads to a first-stage F-statistic over 1,000. General and case-specific solutions are provided.
Journal Article
The Rise of Asia as a Destination for U.S. Patenting
China has become one of the main destinations where U.S. inventors seek to protect their intellectual property.
Journal Article
The Innovation Puzzle: Patents and Productivity Growth
Understanding the pace and nature of technological progress is key for evaluating innovation policy and projecting economic growth.
Journal Article
Uneven Innovation in the U.S.
The San Jose and San Francisco areas don’t make the U.S. top 10 in terms of population, and they each contain merely 1% of the national workforce. But jointly they produce about 20% of all innovation output.
Journal Article
The Impact of the 2017 Tax Cuts and Jobs Act on U.S. Multinationals' Intangible Assets
This article investigates the impact of the 2017 Tax Cuts and Jobs Act (TCJA) on the intangibles of U.S. multinationals. We develop a theoretical model that incorporates key provisions of the TCJA—Global Intangible Low-Taxed Income (GILTI) and Foreign-Derived Intangible Income (FDII)—and derive testable implications for changes in licensing and patent transfer patterns. Using data on international royalty flows and patent assignments, we test the model’s predictions. Our findings suggest that the TCJA may have impacted profit-shifting strategies through intangibles, aligning with our ...
Working Paper
The Creativity Decline: Evidence from US Patents
Economists have long struggled to understand why aggregate productivity growth has dropped in recent decades while the number of new patents filed has steadily increased. I offer an explanation for this puzzling divergence: the creativity embodied in US patents has dropped dramatically over time. To separate creative from derivative patents, I develop a novel, text-based measure of patent creativity: the share of technical terminology that did not appear in previous patents. I show that only creative and not derivative patents are associated with significant improvements in firm level ...
Working Paper
The Impact of the 2017 Tax Cuts and Jobs Act on U.S. Multinationals’ Intangible Assets
This paper investigates the impact of the 2017 Tax Cuts and Jobs Act (TCJA) on U.S. multinationals’ intangibles. We develop a theoretical model that incorporates key provisions of the TCJA—the Global Intangible Low-Taxed Income (GILTI) and the Foreign-Derived Intangible Income (FDII)—and derive testable implications for changes in licensing and patent transfer patterns. Using data on international royalty flows and patent assignments, we test the model’s predictions. Our findings suggest that the TCJA may have impacted profit shifting strategies through intangibles, aligning with our ...