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Do Patent Pools Encourage Innovation? Evidence from the 19th-Century Sewing Machine Industry

Ryan Lampe
DePaul University - College of Commerce

Petra Moser
Stanford University - Department of Economics; National Bureau of Economic Research (NBER)


January 7, 2010


Abstract:     
Members of a patent pool agree to use a set of patents as if they were jointly owned by all members and license them as a package to other firms. Regulators favor pools as a means to encourage innovation: Pools are expected to reduce litigation risks for their members and lower license fees and transactions costs for other firms. This paper uses the example of the first patent pool in U.S. history, the Sewing Machine Combination (1856-1877) to perform the first empirical test of the effects of a patent pool on innovation. Contrary to theoretical predictions, the sewing machine pool appears to have discouraged patenting and innovation, in particular for the members of the pool. Data on stitches per minute, as an objectively quantifiable measure of performance, confirm these findings. Innovation for both members and outside firms slowed as soon as the pool had been established and resumed only after it had dissolved.

Keywords: Patent Pools, Innovation, Patents, Intellectual Property, Economic History

JEL Classifications: K00, N00, N41, 031

Working Paper Series

Date posted: December 01, 2008 ; Last revised: January 12, 2010

Suggested Citation

Lampe, Ryan and Moser, Petra, Do Patent Pools Encourage Innovation? Evidence from the 19th-Century Sewing Machine Industry (January 7, 2010). Available at SSRN: http://ssrn.com/abstract=1308997


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Contact Information

Petra Moser (Contact Author)
Stanford University - Department of Economics ( email )
Landau Economics Building
579 Serra Mall
Stanford, CA 94305-6072
United States
National Bureau of Economic Research (NBER)
1050 Massachusetts Avenue
Cambridge, MA 02138
United States
Ryan Lampe
DePaul University - College of Commerce ( email )
Chicago, IL 60604
United States
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