The implementation of Article 17(3) of the Treaty on the Functioning of the European Union (TFEU) has always been one of the central topics of discussion for legal scholars analysing the relationships between religious groups and European institutions. According to Article 17, the European Union shall maintain an open, transparent and regular dialogue with churches, religious associations or communities, philosophical organisations and non-confessional organisations. In the case in hand, the complainant, the European Humanist Federation (EHF) decided to lodge a complaint before the European Ombudsman when the European Commission rejected the proposal for a dialogue seminar.