ESMT European School of Management and Technology
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Institutional Affiliation: ESMT European School of Management and Technology
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NBER Working Papers and Publications
|June 2007||Patents and the Survival of Internet-related IPOs|
with Iain M. Cockburn: w13146
We examine the effect of patenting on the survival prospects of 356 internet-related firms that IPO'd at the height of the stock market bubble of the late 1990s. By March 2005, nearly 2/3 of these firms had delisted from the NASDAQ exchange. Although changes in the legal environment in the US in the 1990s made it much easier to obtain patents on software and, ultimately, on business methods, less than half of the firms in this sample obtained, or attempted to obtain, patents. For those that did, we hypothesize that patents conferred competitive advantages that translate into higher probability of survival, though they may also simply be a signal of firm quality. Controlling for age, venture-capital backing, financial characteristics, and stock market conditions, patenting is positively ass...
Published: Wagner, S. & Cockburn, I., 2010.
"Patents and the survival of Internet-related IPOs,"
Elsevier, vol. 39(2), pages 214-228, March.
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