“The 25-Percent Rule … 2.0.” IPLaw360, August 19, 2011.
“Patent Valuation,” in S. N. Durlauf and L. E. Blume (eds.), The New Palgrave Dictionary of Economics, 2nd ed. (London: Palgrave Macmillan), 2008. Reprinted in The New Palgrave Dictionary of Economics Online. Palgrave Macmillan. 07 September 2009.
“Bargaining and the Construction of Economically Consistent Hypothetical Licensing Negotiations.” With Andrew Tepperman. Licensing Journal 24(7), August 2004: 8–15.
“How to Count Patents and Value Intellectual Property: Uses of Patent Renewal and Application Data.” With Jean Lanjouw and Ariel Pakes. Journal of Industrial Economics 46(4), December 1998: 405–32.
“On the Incomparability of ‘Comparables’: An Economic Interpretation of ‘Infringer’s Royalties’.” With Stephen Kalos. The Journal of Proprietary Rights 9(4), April 1997: 2–5.
Intellectual Property Rights and Innovation in the Knowledge-Based Economy (ed.), (Ottawa: Industry Canada), 2006.
“Revisiting the Cost of Bad Patents: For Whom Is ‘Rational Ignorance’ Rational?” With Andrew Tepperman. Intellectual Property Today, October 2004: 37–39.
“The Costs and Benefits of Genomics Patents.” American Journal of Pharmacogenomics 4(5), July 2004: 277–92.
“Pharmaceutical Pricing in Canada: Are Drugs Too Expensive?” Innovate 1(1), Spring 2004.
“Reverse Payment Settlements: Structure, Purpose and Reform.” Antitrust Source, October 2006: 1–15.
“Allegations of Harmony Between IP and Competition Policies: In Search of the Lost Chord.” With Gary Roberts. In Glenn F. Leslie (ed.), Annual Fall Conference on Competition Law—1999 (Ottawa: Canadian Bar Association), 2000: 311–323.
“Intellectual Property Rights and Economic Progress: A Review of the Literature” (with Andrew Tepperman), in R. E. Litan (ed.), Law, Innovation and Growth (Northampton: Edward Elgar), 2011.
“The Law and Economics of International Intellectual Property: A Primer,” in Keith Maskus (ed.), Frontiers of Economics and Globalization, vol. 2: Intellectual Property, Growth and Trade (Amsterdam: Elsevier), 2008.
“Intellectual Property Rights and the Propensity to Patent,” (with Nancy Gallini and Andrew Tepperman), in Jonathan Putnam (ed.), Intellectual Property Rights and Innovation in the Knowledge-Based Economy, (Ottawa: Industry Canada), 2006.
“Technological Specialization in International Patenting.” With Jonathan Eaton, Robert Evenson, Samuel Kortum, and Poorti Martino. In Gary Saxonhouse and T. N. Srinivasan (eds.), Duality, Development and the International Economic Regime: Essays in Honor of Gustav Ranis (Ann Arbor: University of Michigan Press), 1998.
“Assigning Patents to Industries: Tests of the Yale Technology Concordance.” With Samuel Kortum. Economic Systems Research 9(2), 1997: 161–175.
- “The Economics of Digital Copyright in the Knowledge-Based Economy,” in Jonathan Putnam (ed.), Intellectual Property Rights and Innovation in the Knowledge-Based Economy, (Ottawa: Industry Canada), 2006.
- “Value Shares of Technologically Complex Products,” 2014.