This paper analyzes platforms and rejections in two-sided markets with network externalities, using the specific context of a payment card association. We study the cooperative antitrust determination of the interchange fee by member banks. We use a framework in which banks and merchants may...

Using a simple downstream duopoly model with vertical relations and downstream R&D, we investigate the effect of non-assertion of patents (NAP) provisions. A monopoly upstream firm decides whether to employ NAP provisions. If it does so, it freely incorporates the R&D outcomes into its inputs....

Purpose: The purpose of this study is to determine the relationship between the geographic market size of businesses and the competitiveness of being able to bid at low prices. Design/methodology/approach: The design of this study is based on a natural experiment approach. Firstly, after...

Abstract This article explores the motivations of a joint venture to provide a high-quality music download service for mobile phones that resulted from a case of a concerted refusal to trade; this refusal was a violation of Antimonopoly Law. We analyze 5 years of monthly compact disk (CD) singles...

Abstract This study attempts to organize the regulatory perspective on the interaction between information law and competition law, especially for platform businesses. An online platform is an entity that mediates multiple groups of users, such as providers and users of products, services, and...

Abstract In this study, I analyze the characteristics of consumer attitudes toward digital and non-digital service provision in the platform business and discuss its regulation. Specifically, I employ consumer questionnaires on subscription services and extract comparable objects to examine the...

Abstract This study examined the reasons for the decline in the plaintiff win rate in medical lawsuits in Japan since 1999. The results suggest that the decline in the plaintiff win rate is likely due to the overall shortening of trial periods. In particular, if the trial period is shortened by...

Purpose: The purpose of this paper is to try to understand the relationship between price and quality in public procurement by using data on the quality of civil engineering works and prices in tenders. By doing so, it tries to conduct a comprehensive examination of the quality of construction...