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Antitrust and Trade Regulation

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Michigan Law Review

Market power

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Full-Text Articles in Law and Economics

Limiting Patentees' Market Power Without Reducing Innovation Incentives: The Perverse Benefits Of Uncertainty And Non-Injunctive Remedies, Ian Ayres, Paul Klemperer Jan 1999

Limiting Patentees' Market Power Without Reducing Innovation Incentives: The Perverse Benefits Of Uncertainty And Non-Injunctive Remedies, Ian Ayres, Paul Klemperer

Michigan Law Review

Uncertainty and delay in patent litigation may have unforeseen virtues. The combination of these oft-criticized characteristics might induce a limited amount of infringement that enhances social welfare without reducing (or without substantially reducing) the profitability of the patentee. Patent infringement is generally viewed as socially inefficient because infringement reduces the patentee's ex ante incentive to innovate. Limited amounts of infringement combined with increased patent duration, however, can substantially reduce the distortionary ex post effects of supracompetitive pricing without reducing the patentee's ex ante incentives to innovate. Indeed, this Article derives a legal regime that preserves the incentive to innovate by …


Mobility Factors In Antitrust Cases: Assessing Market Power In Light Of Conditions Affecting Entry And Fringe Expansion, William H. Wentz Aug 1982

Mobility Factors In Antitrust Cases: Assessing Market Power In Light Of Conditions Affecting Entry And Fringe Expansion, William H. Wentz

Michigan Law Review

To assist courts and litigants in developing and utilizing information on mobility factors in a meaningful manner, I have attempted in this Article to outline a basic approach for analyzing the competitive and efficiency significance of mobility factors in a litigative context. In Part I, I lay the necessary foundation: discussing the importance of mobility factors in accepted economic theory, explaining the sources of the current confusion and controversy about "entry barriers" and deriving from the debate areas of fundamental agreement among economists. Building on this common ground, I develop in Part II a basic approach to consideration of mobility …