Die Theorie mehrseitiger Marktplätze hat sich seit den ersten Arbeiten von Rochet/Tirole (2003), Evans (2003) und Evans/Schmalensee (2007) und ihrer Übertragung auf Medienmärkte durch Dewenter (2006) und Dewenter/Haucap (2009) zur Analyse von Plattformmärkten im wissenschaftlichen Diskurs...

In Europe, the ongoing renewable expansion and delays in the planned grid extension have intensified the discussion about an adequate electricity market design. Against this background, we jointly apply an agent-based electricity market model and an optimal power flow model to investigate the...

Telecom companies are a frequent target of antitrust investigations in Russia. In an industry where services tend to become more and more complex and companies actively invest in diversifying their businesses, the antitrust authority in most of its telecom cases has chosen to define markets...

This article presents a novel method of market delineation, which generates virtually isolated residential clusters using data on the spatial distribution of population. The performance of this approach is evaluated by contrasting it with traditional delineation techniques based on municipal...

Collaborative standardisation and SEP Licensing: a EU policy perspective / G. Bruzzone & S. Capozzi -- Economic considerations on mergers, IPR licensing and litigation : A EU perspective / C. Caffarra & P. Régibeau -- Alternative dispute resolution in FRAND licensing : economic considerations...

Market delineation is a fundamental tool in modern antitrust analysis. However, the definition of relevant markets can be very difficult in practice. This preliminary draft applies a new methodology combining a simple price correlation test with hierarchical clustering -a method known from...

"In recent years, market definition has come under attack as an analytical tool of competition law. Scholars have increasingly questioned its usefulness and feasibility. That criticism comes into sharper relief in dynamic, innovation-driven markets, which do not correspond to the static markets...

OTT-messenger such as facebook, WhatsApp have gained wide popularity among mobile users while traffic of text messaging has been in strong decline in several countries. This work is the first to provide an empirical analysis how consumption of OTT-messengers affects demand for text messaging and...

OTT-messenger such as facebook, WhatsApp have gained wide popularity among mobile users while traffic of text messaging has been in strong decline in several countries. This work is the first to provide an empirical analysis how consumption of OTT-messengers affects demand for text messaging and...

Platform markets are characterized by the existence of indirect network effects that connect two or more market sides through a platform that internalizes these feedback effects. Conventional instruments of market definitions which consider price levels cannot easily applied in case of two-sided...

Developments in the EU telecommunications markets require a recurrent redesign of the regulatory framework for telecommunications services. In this regard, the analysis of the substitution effects between different types of telephony is the cornerstone of market definition and therefore of...

We develop a method to measure the intensity of competition between firms. Our method, which we call the Best Response Measure (BRM), is related to the conduct parameter method, but avoids the main problems associated with that method. The BRM relies on a very general framework and limited data...

FMS (fixed-to-mobile substitution) has increasingly been echoed within the regulatory agenda of the global and domestic policy actors as the usage of mobile telephony has rapidly exceeded that of the fixed telephony in the last decade. In this line of thinking and upon the drastic changes in...

While often times the Hypothetical Monopolist Test (HMT) utilized in relevant market delineation is implemented with uniform price increases throughout all the goods in the candidate relevant market, since 1984 the versions of the U.S. Merger Guidelines have emphasized that these small but...

Cover -- Einleitung -- A. Platform Revolution - von der Pipeline zur Plattform -- B. Platform Revolution - Fluch oder Segen? -- C. Plattform-Nutzer-Vereinbarungen -- D. Plattformverbote -- E. Ziel und Gang der Untersuchung -- F. Abgrenzung des Untersuchungsgegenstands -- Erstes Kapitel:...

Given various recent antitrust investigations on the retail sector, we deal with uncovering demand systems substitution patterns for a particular market (diapers) to investigate the inter-format competition (supermarkets vs. discounters vs. drugstores). Using the uncovered demand system we...

In der wettbewerbsbehördlichen Fallpraxis gewinnt die Bestimmung von Nachfragemacht zunehmend an Bedeutung. Bei Fusionsvorhaben im Einzelhandel kann Nachfragemacht ein Hauptgrund für eine Untersagung bzw. für Auflagen sein. In diesem Beitrag wird die aktuelle Diskussion zur Bestimmung von...

This paper analyses the extent of inter-format retail competition between supermarkets, discounters and drugstores in Germany, using data from the German market for diapers. We estimate a random coefficient logit model at the individual household level. Based on consumer substitution patterns,...