Counterfeiting, enforcement and social welfare

Ming Fang Tsai, Jiunn Rong Chiou

Research output: Contribution to journalArticlepeer-review

15 Scopus citations


This paper uses a vertical product differentiation model to discuss the influences caused by counterfeiting on prices and outputs of original products, consumer surplus and social welfare. We also explore the impact of the government's enforcement on counterfeiting and social welfare. We find that as counterfeiting may occur, sales of the original product could either increase or decrease. The welfare effects of government enforcement are shown as follows. First, a strict enforcement on counterfeiting by government may either increase or decrease welfare. Second, when counterfeiting emerges, welfare under a stricter enforcement is not necessarily larger than that without enforcement. Last, a strict enough enforcement can still improve welfare even if there is a relatively high enforcement cost.

Original languageEnglish
Pages (from-to)1-21
Number of pages21
JournalJournal of Economics/ Zeitschrift fur Nationalokonomie
Issue number1
StatePublished - Sep 2012


  • Counterfeit
  • Enforcement
  • Network externality
  • Vertical differentiation


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