It is important to control whether dominant companies in particular market sectors follow laws and rules and do not abuse their dominance at the expense of weaker companies. This behaviour is likely to damage current or avoid the entry of new competitors, shrink the competition and set the environment for price changes the consumer is exposed to. The thesis clarifies the theoretical aspect of this issue and tries to apply it on the real case from the railway transport sector in order to describe the procedure of defining relevant market and market share and investigating the abusive behaviour. A questionnaire survey among railway passeners is an integral part of the thesis. JEL Classification D21, D22, K21, L11, L12, L40 Keywords Predatory prices, relevant market, SSNIP test, railway transport, Czech Railways Author's e-mail Iva-Slamova@seznam.cz Supervisor's e-mail vacek@fsv.cuni.cz

Šiame darbe analizuojamas Europos Bendrijos ir Lietuvos Respublikos konkurencijos teisės normų, reglamentuojančių piktnaudžiavimą dominuojančia padėtimi nustatant nesąžiningas kainas, taikymas. Analizuojama nesąžiningų kainų sąvoka, išskiriant pagrindines tokių kainų rūšis – nepagristai didelės kainos, „grobuoniškos” kainos, diskriminacinės kainos bei nesąžiningas nuolaidų taikymas. Darbe aptariama Europos Teisingumo teismo, Europos Komisijos bei Lietuvos Respublikos Konkurencijos Tarybos bei administracinių teismų praktika, nagrinėjant nesąžiningų kainų taikymo bylas ir pateikiamos pagrindinės taisyklės, pagal kurias nesąžiningas kainas galima atskirti nuo sąžiningų, taip pat trečiame šio darbo skyriuje įvardijamos pagrindinės šių taisyklių taikymo praktikoje problemos. Paskutiniame skyriuje apžvelgiama konkurencijos teisės normų, susijusių su nesąžiningomis kainomis, įgyvendinimas Lietuvoje po įstojimo į ES, analizuojama konkurencijos politikos įgyvendinimo efektyvumas, kokybė, pateikiami pagrindiniai sprendimai bei išaiškinimai, nustatant piktnaudžiavim�� dominuojančia padėtimi taikant nesąžiningas kainas. / This thesis was set out to analyse the application of competition law on unfair pricing related to the abuse of dominant positions in the European Community and the Republic of Lithuania. Firstly, the study gives a definition of unfair pricing and identifies four types of such pricing: excessive pricing, “predatory” pricing, discriminatory pricing and unfair discounts and rebates. Then, it overviews the practice of the European Court of Justice, the European Commission and the Competition Council and the administrative courts of the Republic of Lithuania in hearing cases on unfair pricing. The author then lists the fundamental rules that may help to distinguish between fair and unfair pricing. The third chapter indicates the main problems faced when applying these rules in practice. The last chapter gives an overview of the application of competition law on unfair pricing following Lithuania’s accession to the EU. The author also analyses the effectiveness and quality of the implementation of competition policy and presents the fundamental judgements on and interpretations of unfair pricing in relation to the abuse of dominant positions.

- Competitor's Dominant Position and Its Abuse in the Czech and European Law The aim of this thesis is to identify and analyze issues of market dominance and its abuse as one of the most important areas of the competition law. An indispensable part of every analysis of such abuse is also a definition and assessment of the relevant market which we will deal with in a separate section of this thesis. The issue of abuse of a dominant position is analyzed with the help of the competition rules and the judicial practice of the competent authorities, both at the community and national level. First chapters are designed as an introduction to the issue of dominance, offering readers a better understanding of often ambiguous approach to competition law, its restrictions and distortions. We will also be dealing with related terms such as the competitor, the company and their mutual interchangeability. Special attention will be paid to the introduction and further analysis of the relevant market, where the correct definition is the basis for the assessment of any competition case. The issue of relevant market is demonstrated on particular examples, especially on the current case of Student Agency, where the mode of defining the relevant market also decides the final outcome of the case with respect to the...