Abstract
This article addresses one very important aspect of the international agreements, concluded by the EU: their direct effect. The possibility for individuals to rely on provisions from vast number of legally binding treaties directly before national courts is essential for the enforceability and the application of international rules. The issue of the direct effect is nowadays even more important, since the EU is in the process of negotiation of the immensely significant and controversial agreement for investment and trade with US: the TTIP. The article will discuss the possible implication of the concept on this particular treaty in the light of the jurisprudence of the CJEU regarding other international agreements – the WTO on one hand and the various cooperation agreements or conventions on the other - and will offer arguments in favour of the recognition of the direct effect.