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The Chief Competition Economist

Publications and Discussion papers


Mergers with Differentiated Products: Where do we Stand?
Tommaso Valletti and Hans Zenger

Analyzing Vertical Mergers
Hans Zenger

Recent Developments at DG Competition: 2019/2020
Liliane Karlinger, Dimitrios Magos, Pierre Regibeau and Hans Zenger


Increasing Market Power and Merger Control
Tommaso Valletti and Hans Zenger

Antitrust and Innovation: Welcoming and protecting disruption
Giulio Federico, Fiona Scott Morton and Carl Shapiro

Interchange Fee Regulation and Service Investments
Markus Reisinger and Hans Zenger

Parallel Imports, Price Controls, and Innovation
By Markus Reisinger, Lluís Saurí and Hans Zenger

Vertical relations, opportunism, and welfare
Germain Gaudin

Online Privacy and Market Structure: Theory and Evidence
Sapi Geza with Sabatino Lorien

Collective Exclusion
Karlinger Giardino Liliane joint with Calcagno Claudio A.


Customer Recognition and Mobile Geo-Targeting
Sapi Geza with Reiz Tim and Baye Irina

Recent Developments at DG Competition: 2017/2018
Andrea Amelio, Thomas Buettner, Cyril Hariton, Gábor Koltay, Penelope Papandropoulos, Geza Sapi, Tommaso Valletti, Hans Zenger

Vertical Bargaining and Retail Competition: What Drives Countervailing Power?
Germain Gaudin

Recapture Ratios in Merger Analysis
Serge Moresi and Hans Zenger

Should Profit Margins Play a More Decisive Role in Merger Control? - A Rejoinder to Jorge Padilla
Tommaso Valletti and Hans Zenger

Horizontal mergers and product innovation
Giulio Federico, Gregor Langus and Tommaso Valletti


Should Mobile Marketers Collect Other Data Than Geo‐Location?
Sapi Geza with Baye Irina

Recent developments at DG Competition: 2016/2017
Benno Buehler, Daniel Coublucq, Cyril Hariton, Gregor Langus, Tommaso Valletti

Horizontal Mergers, Innovation and the Competitive Process
Giulio Federico


Recent developments at DG Competition: 2015/2016
Claici Adina, Coublucq Daniel, Federico Giulio, Motta Massimo, Sauri Romero Lluis


Ex-post evaluation analysis of two mobile telecom mergers: T-Mobile/tele.ring in Austria and T-Mobile/Orange in the Netherlands
Luca Aguzzoni, Benno Buehler, Luca Di Martile, Georg Ecker, Ron Kemp, Anton Schwarz, Robert Stil

Recent developments at DG Competition: 2014
Giulio Federico, Massimo Motta and Penelope Papandropoulos


Recent Developments at DG Competition: 2013–2014
Benno Buehler, Gábor Koltay, Xavier Boutin, Massimo Motta, Review of Industrial Organization


Consumer Welfare in EU Competition Policy
Svend Albaek in C. Heide-Jørgensen, C.Bergqvist, U. Neergaard and S.T. Poulsen (eds.)

Economic Analysis at the European Commission 2012–2013
Thomas Buettner, Giulio Federico, Kai-Uwe Kühn and Dimitrios Magos

Multimarket contact in Italian retail banking: Competition and welfare
Jozsef Molnara, Roberto Violi and Xiaolan Zhou

SEPs and Evidence-Based Antitrust Enforcement
Kai-Uwe Kuhn, Fiona Scott Morton and Howard Shelanski

Optimal Asset Divestments with Homogenous Products
Giulio Federico and Angel L. Lopez

SAA II: Abuse of Dominance in the South African skies
Giulio Federico

Communication, Renegotiation and the Scope for Collusion
Kai-Uwe Kühn and David J. Cooper

Financial Constraints and the Moral Hazard: The Case for Franchising
Kai-Uwe Kühn, Ying Fan and Francine Lafontaine


Tying and freebies in two-sided markets
Andrea Amelio and Bruno Julien

Economics at DG Competition, 2011–2012
Kai-Uwe Kühn, Szabolcs Lorincz, Vincent Verouden and Annemiek Wilpshaar

How Market Fragmentation can Facilitate Collusion
Kai-Uwe Kühn

Contingent Capital: An In-Depth Discussion
Stan Maes and Wim Schouten

Empirical Review of EU Asset Relief Measures in the Period 2008-2012
Yassine Boudghene and Stan Maes

Relieving Banks from Toxic or Impaired Assets: The EU State Aid Policy Framework
Yassine Boudghene and Stan Maes Maes

Sabotaging entry: an estimation of damages in the directory enquiry service market
Maite Martinez Granado and Georges Sotis

Should Variable Cost Aid to Attract Foreign Direct Investment be Banned? A European Perspective
Mario Mariniello

Leveraging Monopoly Power by Degrading Interoperability
Kai-Uwe Kühn, Christos Genakos and John Van Reenen


Economics at DG Competition, 2009-2010
Kai-Uwe Kühn, Svend Albaek and Miguel de la Mano

Fair, reasonable and non-discriminatory (FRAND) terms: a challenge for competition authorities
Mario Mariniello

Quantifying Antitrust Damages in Civil Proceedings: A Pragmatic Approach
Raphaël De Coninck

Perfect surcharging and the tourist test interchange fee
Hans Zenger

The Competitive Effects of Rail Freight Mergers in the Context of European Liberalization
Oliver Stehmann and Hans Zenger


Alternating Monopoly and Tacit Collusion
Andrea Amelio and Sara Biancini

Economics at DG Competition, 2009-2010
Damien Neven and Miguel de la Mano

Application of the Nonhorizontal Merger Guidelines
Raphaël De Coninck

When Does Exclusive Dealing Intensify Competition for Distribution? Comment on Klein and Murphy
Hans Zenger

Estimating private antitrust damages
Raphael De Coninck

Best Practices onthe Submission of Economic Evidence and Data Collection
Damien Neven and Raphael De Coninck

Predatory Exclusive Dealing
Joachim Klein and Hans Zenger

Asset Relief Measures in the EU: Overview and Issues
Yassine Boudghene, Stan Maes and Martin Scheicher


Economics at DG Comp 2008-2009
Damien Neven and Miguel de la Mano

Capacity choices in liberalised electricity markets
Fidel Castro-Rodriguez, Pedro L. Marín and Georges Sotis

Market definition in recent EC merger investigations: The role of empirical analysis
Andrea Amelio and Daniel Donath

Competition policy in times of crisis
David Spector, Andrea Amelio, Georges Siotis, Antoine Winckler, François-Charles Laprévote and Carlos Winograd

Generic entry in prescription medicines in the EU: main characteristics, determinants and effects
Elzbieta Glowicka, Szabolcs Lorincz, Enrico Pesaresi, Lluis Sauri Romero and Vincent Verouden


Economics at DG Competition 2007-2008
Damien Neven and Svend Albaek

Towards a More Refined Economic Approach in State Aid Control
Damien Neven and Vincent Verouden

The non-horizontal merger guidelines in practice
Raphael De Coninck and Penelope Papandropoulos

Ex post evaluation of enforcement: a principal-agent perspective
Damien Neven and Hans Zenger

Implementing an effects-based approach under Article 82
Penelope Papandropoulos

Economic analysis in European competitionpolicy: The first 2000 (or so) years
Damien Neven

Vertical Agreements: Motivation and Impact
Vincent Verouden

Ownership, performance & national champions
Damien Neven


Economics at DG Competition 2006-2007
Damien Neven and Svend Albaek

How should price discrimination be dealt with by competitionauthorities?
Penelope Papandropoulos

European State Aid Control: an economic framework
Hans W. Friederiszick, Lars-Hendrik Röller and Vincent Verouden

L'analyse économique des effets unilatéraux dans quelqes cas récents de fusions
Penelope Papandropoulos

Competition Economics in the European Commission
Damien Neven

The analysis of conglomerate effects in EU merger control,
Paolo Bucirrosi (ed)

The Political Economy of European Merger Control: Evidence using Stock Market Data
T. Duso and Damien Neven


The Impact of the New Substantive Test in European Merger Control
Miguel De la Mano and Lars-Hendrik Röller

Competition economics and antitrust in Europe
Damien Neven

Union power and product market competition: evidence from the airline industry
Damien Neven, Lars-Hendrik Röller and Z. Zhang

GE Honeywell – A case study of transatlantic conflict
Damien Neven and J. Grant

The Year 2005 at DG Competition: The Trend towards a More Effects-Based Approach
Lars-Hendrik Röller and Oliver Stehmann

Grenzen der Wettbewerbspolitik bei der Öffnung von Netzwerkindustrien
Lars-Hendrik Röller and Oliver Stehmann

Ökonomische Analyse des Begriffs "significant impediment to effective competition"
Lars-Hendrik Röller and Andreas Strohm

Efficiency gains from mergers
Lars-Hendrik Röller, Johan Stennek and Frank Verboven

Weniger und effektiver - Ökonomische Prüfverfahren könnten die EU-Beihilfenkontrolle stärken
Lars-Hendrik Röller and Hans W. Friederiszick


Simulating the effect of Oracle's takeover of PeopleSoft
Claes Bengtsson

Economic Analysis and Competition Policy Enforcement in Europe
Lars-Hendrik Röller

The Office of the Chief Competition Economist at the European Commission"
Lars-Hendrik Röller and Pierre A. Buigues

Der ökonomische Ansatz in der europäischen Wettbewerbspolitik
Lars-Hendrik Röller

A Three-Step Structured Rule of Reason to Assess Predation under Article 102
Miguel de la Mano and Benoît Durand

Endogenous Costs and Price-Cost Margins
Damien Neven, Lars-Hendrik Röller and Zhentang Zhang

Marktabgrenzung und Marktmacht
Hans W. Friederiszick


Ökonomische Analyse in der EU Wettbewerbspolitik
Lars-Hendrik Röller and Hans W. Friederiszick

The Impact of the New Substantive Test in European Merger Control
Lars-Hendrik Röller and Miguel de la Mano