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- March 2010
- Article
The Role of Independent Invention in U.S. Technological Development, 1880-1930
By: Tom Nicholas
Why did independent inventors account for over half of US patents by 1930 and more than three times the number granted to R&D firms? Using new data on patents and historical patent citations, I show that independents supplied high quality innovations to a... View Details
- January 2010
- Article
Breakthrough Inventions and Migrating Clusters of Innovation
By: William R. Kerr
We investigate the speed at which clusters of invention for a technology migrate spatially following breakthrough inventions. We identify breakthrough inventions as the top one percent of U.S. inventions for a technology during 1975-1984 in terms of subsequent... View Details
- 2009
- Working Paper
Breakthrough Inventions and Migrating Clusters of Innovation
By: William R. Kerr
We investigate the speed at which clusters of invention for a technology migrate spatially following breakthrough inventions. We identify breakthrough inventions as the top one percent of US inventions for a technology during 1975-1984 in terms of subsequent citations.... View Details
- May 2009
- Article
The Empirical Impact of Intellectual Property Rights on Innovation: Puzzles and Clues
By: Josh Lerner
Economists have long seen the patent system as a crucial lever through which policymakers affect the speed and nature of innovation in the economy. It is not surprising, then, that the profound changes which have roiled the global patent system over the past 20 years... View Details
- March 2009
- Article
Applicant and Examiner Citations in U.S. Patents: An Overview and Analysis
By: Juan Alcacer, Michelle Gittelman and Bhaven Sampat
Prior art patent citations have become a popular measure of patent quality and knowledge flow between firms. Interpreting these measurements is complicated, in some cases, because prior art citations are added by patent examiners as well as by patent applicants. The... View Details
- January 2009
- Article
Spatial Diversity in Invention: Evidence from the Early R&D Labs
By: Tom Nicholas
This article uses historical data on inventor and firm R&D lab locations to examine the technological and geographic structure of corporate knowledge capital accumulation during a formative period in the organization of US innovation. Despite the localization of... View Details
- 2008
- Working Paper
The Supply Side of Innovation: H-1B Visa Reforms and U.S. Ethnic Invention
By: William R. Kerr and William F. Lincoln
This study evaluates the impact of high-skilled immigrants on US technology formation. Specifically, we use reduced-form specifications that exploit large changes in the H-1B visa program. Fluctuations in H-1B admissions levels significantly influence the rate of... View Details
- September 2008
- Article
Does Innovation Cause Stock Market Runups? Evidence from the Great Crash
By: Tom Nicholas
This article examines the stock market's changing valuation of corporate patentable assets between 1910 and 1939. It shows that the value of knowledge capital increased significantly during the 1920s compared to the 1910s as investors responded to the quality of... View Details
- 2008
- Working Paper
Applicant and Examiner Citations in U.S. Patents: An Overview and Analysis
By: Juan Alcacer, Michelle Gittelman and Bhaven Sampat
Researchers studying innovation increasingly use indicators based on patent citations. However, it is well known that not all citations originate from applicants—patent examiners contribute to citations listed in issued patents—and that this could complicate... View Details
- August 2008
- Article
Ethnic Scientific Communities and International Technology Diffusion
By: William R. Kerr
This study explores the importance of knowledge transfer for international technology diffusion by examining ethnic scientific and entrepreneurial communities in the US and their ties to their home countries. US ethnic research communities are quantified by applying an... View Details
- 2008
- Working Paper
The Agglomeration of U.S. Ethnic Inventors
By: William R. Kerr
The ethnic composition of US inventors is undergoing a significant transformation—with deep impacts for the overall agglomeration of US innovation. This study applies an ethnic-name database to individual US patent records to explore these trends with greater detail.... View Details
- April 2008 (Revised August 2008)
- Supplement
AT&T v. Microsoft (B): District Court Ruling and Appeal
By: Willy C. Shih
The (B) case follows the course of Microsoft's settlement with AT&T, and its appeal in the issue of foreign replicated software that eventually goes to the U.S. Supreme Court. It is intended for follow-up the discussion of the (A) case with what happened, examining a... View Details
- April 2008
- Article
The Survey of Industrial R&D—Patent Database Link Project
By: William R. Kerr and Shihe Fu
This paper details the construction of a firm-year panel dataset combining the NBER Patent Dataset with the Survey of Industrial R&D conducted by the Census Bureau and National Science Foundation. The dataset constitutes a platform that offers an unprecedented view of... View Details
- March 2008
- Case
Novartis AG: Science-Based Business
By: H. Kent Bowen and Courtney Purrington
Novartis is a science-based drug company, which has important implications for its business strategy. It is one of the largest pharmaceutical companies in the world with over $38B in sales in 2007. Pharmaceuticals account for slightly over $24B of that total. In 2007,... View Details
- February 2008 (Revised May 2011)
- Case
The Travails of Rubber: Goodyear or Badyear?
By: Tom Nicholas and Andrew Ferguson
Explores the reason why Charles Goodyear, inventor of rubber vulcanization, was unable to profit from his discovery despite securing international property rights over his invention through a patent in 1844. Considers the utility of patents as an incentive for... View Details
- January 2008 (Revised August 2008)
- Case
AT&T v. Microsoft (A): IP Litigation Strategy
By: Willy Shih
This case examines a hard fought litigation over a patent that originated at Bell Labs. It illustrates the challenges that technology companies face today innovating in a complex intellectual property environment in fields where there is a high amount of... View Details
- 30 Nov 2007
- Conference Presentation
The Ethnic Composition of US Inventors: Evidence Building from Ethnic Names in US Patents
By: William R. Kerr
- November 2007
- Article
Innovation and Incentives: Evidence from Corporate R&D
By: Josh Lerner and Julie Wulf
Beginning in the late 1980s, American corporations began increasingly linking the compensation of central research personnel to the economic objectives of the corporation. This paper examines the impact of the shifting compensation of the heads of corporate research... View Details
- fall 2007
- Article
The Design of Patent Pools: The Determinants of Licensing Rules
By: Josh Lerner, Marcin Strojwas and Jean Tirole
Patent pools are an important but little-studied economic institution. In this paper, we first make a set of predictions about the licensing terms associated with patent pools. The theoretical framework predicts that (a) pools consisting of complementary patents are... View Details
- June 2007
- Article
What Is the Impact of Software Patent Shifts? Evidence from Lotus v. Borland
By: Josh Lerner and Feng Zhu
Economists have debated the extent to which strengthening patent protection spurs or detracts from technological innovation. This paper examines the reduction of software copyright protection in the Lotus v. Borland decision. If patent and copyright protections are... View Details