Mattias Derlén

Contact Information

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Works at:



Umeå universitet , SE-901 87 Umeå , Sverige

Visiting Address:

Samhällsvetarhuset, Plan 5, Umeå universitet


+46 90 786 92 32


+46 90 786 65 87


mattias.derlen@umu.seEmail 2

mattias.derlen@jus.umu.seEmail 1


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My main area of research is constitutional EU law, with emphasis on the European Court of Justice. I am particularly interested in the multilingual interpretation of EU law, as performed both by the CJEU and by national courts. For further details see the list of publications. 

Current Research

Currently, I am part of research team working on an interdisciplinary project concerning the case law of the CJEU. The working title is The European Court of Justice as Lawmaker: A Search for Coherence in the Development of European Law. The project is funded by the Swedish Research Council. 

Previous Research

My previous research has mainly concerned the multilingual interpretation of European primary and secondary law. In my 2007 doctoral dissertation A Castle in the Air - the Complexity of the Multilingual Interpretation of European Community Law I discuss the European Court of Justice as well as Danish, English and German courts. I have discussed the approach of Swedish courts vis-à-vis the multilingual character of EU law in article form. I have also discussed the relationship between multilingual interpretation and preliminary rulings in a number of articles. For more information see my list of publications.

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Related Information



Research Themes

Center of European Law and International Trade LawEuropean Law