Russell W. Mangum III

Senior Vice President, Litigation Services


Ph.D., Economics, University of Southern California, 1995
M.A., Economics, University of Southern California, 1992
B.A., Economics, with honors, California State University, Fullerton, 1988

T: (949) 955-9025
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Dr. Mangum has over 15 years experience in economic research and analysis. He has served as a consulting and testifying expert in the private sector and for local, state, and federal governments. His practice focuses on economic analysis and expert testimony in a wide range of matters involving intellectual property, antitrust, class certification, and damage quantification. Examples of his work as an expert include estimation of lost profits and reasonable royalty in patent infringement matters; analysis of relevant markets and lost profits in antitrust cases; and valuation of intellectual property. Dr. Mangum has also taught courses in economics, statistics, and econometrics at three colleges and universities.

Economics and Business Specialties
Commercial Damages
Intellectual property

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Antitrust, commercial damages, intellectual property, valuation

Industry Experience

Food service/restaurants, consumer and commercial electronics, medical devices/healthcare, semiconductors, clothing/fashion, computers/software, telecommunications, engineering services, entertainment/broadcasting,consumer products

Selected Publications & Presentations

“Cost Analysis,” with J. Kinrich and A. Meister, in Intellectual Property Damages, Guidelines and Analysis, 2004 supplement, M. Glick, L. Reymann, and R. Hoffman, eds., Chapter 14a, Wiley: New York.

“Analysis and Measurement of Damages in Patent Infringement Actions,” with J. Kinrich, 2001, manuscript.


American Economic Association

Los Angeles Intellectual Property Law Association

Licensing Executives Society–Chair of Orange County Chapter

Orange County Patent Law Association

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