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Private and public IPR protection in a vertically differentiated software duopoly
Žigić, Krešimir ; Střelický, J. ; Kúnin, Michael
We study the interaction between public and private intellectual property rights (IPR) protection in a duopoly in which software developers offer a product variety of differing quality and compete for heterogeneous users, who have an option to buy a legal version, possibly use an illegal copy, or not buy a product at all. Illegal usage implies violation of IPR and is punishable. A developer may use private IPR protection for his software if the level of piracy is high. An important intermediate step in our analysis addresses firms’ pricing strategies and the analysis of the impact of both private and public IPR protection on these strategies (with monopoly serving as a benchmark case). Last but not least, we make some comparisons with an analogous model based on horizontal product differentiation.
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Essays on Pricing, Product Quality and Intellectual Property Rights Protection in Software Market
Střelický, Jiří ; Žigić, Krešimir (advisor) ; Horniaček, Milan (referee) ; Peitz, Martin (referee)
In this thesis, I explore the particular issues of pricing, product quality selection, and intellectual property rights (IPR) protection in the software market. In the first part of the thesis, I study price discrimination in a monopolistic software market. The monopolist charges different prices for the upgrade version and for the full version. Consumers are heterogeneous in taste for software that is infinitely durable and there is no resale. I show that price discrimination leads to a higher software quality but raises both absolute price and price per quality. This price discrimination decreases the total number of consumers compared to no discrimination. Finally, such discrimination decreases consumers' surplus but increases the developer's profit and social welfare that attains the social optimum in the limit. In the second part of the thesis, I focus on the interaction between a regulator's IPR protection policy against software piracy on the one side and the forms of IPR protection that software producers may themselves undertake to protect their IPR on the other side. Two developers, each offering a variety of different quality, compete for heterogeneous users who choose among purchasing a legal version, using an illegal copy, and not using a product at all. Using an illegal version...
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