The purpose of this paper is to investigate how different types of demand structure affect firms’ optimal pricing and private copy protection (DRM) level of digital products. We construct a model where the equilibrium prices and protection levels are dependent upon the two parameters: public copy protection of digital products and degree of compatibility of DRM in terms of hacking technology. W...

today’s civil law faced new challenges and situations for protecting human in role of consumer and also attention to industrial life growing made new branch of law called consumer law that have some positive result in all economic, social and political aspects like increasing household income, reduce conflict and tension between buyer and seller in society and increased public participation i...