Domstolen har slået fast, at når en fordel, som ydes af en medlemsstat, styrker en kategori af virksomheders stilling i forhold til andre virksomheder, som de konkurrerer med i samhandelen inden for Fællesskabet, må det antages, at denne samhandel påvirkes af fordelen [19].
The Court of Justice has held that, where an advantage granted by a Member State strengthens the position of one category of undertakings in relation to other competing undertakings in intra-Community trade, the latter must be regarded as affected by that advantage [19].