This article discusses two elements that the draft EU Directive on actions for damages treats only perfunctorily. The first concerns lucrum cessans or the quantity effect which is found to be of a relatively higher magnitude than the price effect. The second concerns the difficulties of...

The paper deals with the competitive effects of price guarantees in a spatial duopoly where consumers can search for lower prices but have to incur hassle costs if they want to claim a price guarantee. It is shown that symmetric equilibria with and without price guarantees exist but price...

This contribution is a broad (textbook-like) survey on the economic foundations of competition policy. It encompasses a comprehensive overview on both industrial economics and law and economics arguments, as far as they are relevant for competition law. Contents: I. Competition and competition...

Market definition is one of the most important analytical tools for competition authorities to examine and evaluate competition problems. By defining a relevant market, then calculating and assigning market shares, competition authorities seek to assess the market power of firms, which is of...

The article critically examines the European Commission's decision in the four-to-three merger between Telefónica Deutschland and E-Plus. Despite the explicit recognition of the importance of vertical effects in the telecommunications sector more generally as exemplified by the European...

German Abstract: Die Digitalisierung hat in den letzten Jahren alle Lebensbereiche durchdrungen. Es ist davon auszugehen, dass in der näheren Zukunft immer größere Datenvolumen übertragen werden. Den neuen Herausforderungen kann nur über den vollständigen und flächendeckenden Ausbau von...

German Abstract: Der Aufsatz untersucht die wesentlichen Bestimmungsfaktoren von Preisschirmeffekten, die entstehen, wenn durch eine kartellinduzierte Preiserhöhung Nachfrage auf Substitute von Kartellaußenseitern umgelenkt wird. Solche Preisschirmeffekte entstehen unabhängig davon, ob die...

We analyse the key determinants of umbrella effects, which arise when the price increase or quantity reduction of a cartel diverts demand to substitute products. Umbrella effects arise irrespective of whether non cartelists act as price takers (“competitive fringe”) or respond strategically...

German abstract: Wettbewerbsanaloge Preise stehen im Mittelpunkt der Regulierung natürlicher Monopole wie bspw. der Zugang zu bestimmten Telekommunikationsnetzwerken. Die Preise sind so zu gestalten, dass Anreize für erforderliche Infrastrukturinvestitionen gesetzt werden, und gleichzeitig...