This diploma thesis deals with the recognition and enforcement of maintenance claims according to the European maintenance regulation Council Regulation (EC) No 4/2009. With this regulation, the EU has created an instrument to enforce cross-border maintenance claims more swiftly and efficiently, and to minimize the costs at the same time. The difficulty of cross-border maintenance claims between different Member States is that those who are not legally trained often hesitate to recover them. Previously, Council Regulation (EC) No 44/2001, and Council Regulation (EC) No 805/2004 dealt with these matters. When the European maintenance regulation entered into force on 11.6.2011, the relevant provisions of these regulations were replaced. This paper focuses on Chapters I (Scope of application) and IV (Recognition, enforceability and enforcement of decisions) of the regulation. It will first provide a general overview over the development and objectives of the European maintenance regulation. Also, its interpretation will be discussed. Furthermore, the regulations scope of application will be established and its relation to other Community instruments will be explained as well. The main part of this diploma thesis discusses Chapter IV, which contains provisions on the enforcement and recognition of decisions concerning maintenance obligations. In this context, it is particularly important to distinguish between Member States that are bound by (Section 1) and Member States that are not bound by (Section 2) the 2007 Hague Protocol on maintenance obligations. Moreover, Section 3 of Chapter IV is presented, which deals with the “Common provisions”.