Colorado College Working Paper No. 2013-1
13 Pages Posted: 29 Mar 2013
Date Written: March 26, 2013
This paper evaluates the contribution of patent-related events to changes in stock prices, proposing that economics has traditionally failed to find much effect for two reasons which we identify and correct. First, patents vary widely in quality so we use quantile analysis and alternative measures of patent quality to identify effects. Second, we permit the possibility that information leaks out into investor sentiment during the long and uncertain time until patent grant, so evaluate the stock price effect at four different dates in the life of each patent. As a case study to test this approach, track all patents over a 27-year period for Apple Inc., permiting design patents to have different effects that traditional utility-model patents, and isolate the effect that Steve Jobs’s name on a patent has at each stage of a patent’s life.
Keywords: patent, Apple, valuation, design patent, event analysis
JEL Classification: G14, L25, L43, O3
Suggested Citation: Suggested Citation
Johnson, Daniel K. N. and Scowcroft, Sylvie, The Importance of Being Steve: An Econometric Analysis of the Contribution of Steve Jobs's Patents to Apple's Market Valuation (March 26, 2013). Colorado College Working Paper No. 2013-1. Available at SSRN: https://ssrn.com/abstract=2239933 or http://dx.doi.org/10.2139/ssrn.2239933