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http://ssrn.com/abstract=1087536
 
 

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Implementing the Hypothetical Monopolist SSNIP Test with Multi-Product Firms


Serge Moresi


Charles River Associates (CRA)

Steven C. Salop


Georgetown University Law Center

John Woodbury


Charles River Associates (CRA)

January 26, 2008


Abstract:     
This note describes the implementation of the hypothetical monopolist ssnip test for market definition in the context of merger cases where firms produce multiple differentiated products. The test developed here represents an extension and generalization of the Katz-Shapiro and O'Brien-Wickelgren market definition test for the case of multi-product firms. We present and explain this test with an illustrative example. In the Appendix, we provide a more general and technical description of the test.

Number of Pages in PDF File: 15

Keywords: market definition, SSNIP test, multi-product firms

JEL Classification: L41

working papers series


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Date posted: January 30, 2008  

Suggested Citation

Moresi, Serge and Salop, Steven C. and Woodbury, John, Implementing the Hypothetical Monopolist SSNIP Test with Multi-Product Firms (January 26, 2008). Available at SSRN: http://ssrn.com/abstract=1087536 or http://dx.doi.org/10.2139/ssrn.1087536

Contact Information

Serge Moresi (Contact Author)
Charles River Associates (CRA) ( email )
1201 F Street, NW
Suite 700
Washington, DC 20004
United States
(202)662-3847 (Phone)
Steven C. Salop
Georgetown University Law Center ( email )
600 New Jersey Avenue, NW
Washington, DC 20001
United States
202-662-9095 (Phone)
202-662-9497 (Fax)
John Woodbury
Charles River Associates (CRA) ( email )
1201 F. St. NW
Ste. 700
Washington, DC 20004
United States
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