A recent editorial in this journal stressed the need to rearticulate the methodology – and thereby the distinctiveness – of international law in the context of blurring disciplinary lines between international law and international relations. The aim of this article is to contribute to the methodological aspect of the debate. First, the article outlines a legal empirical approach, which complements legal methodology of international law with empirical tools and techniques such as citation network analysis and corpus linguistics. Second, the article applies the approach on the case law of two European courts: the Court of Justice of the European Union (CJEU), and the European Court of Human Rights (ECtHR). It demonstrates how the study of case citations and the language of courts enhance the validity, reliability, and transparency of the established legal method. In particular, scholars of international law gain a stable and complete quantitative basis for a further in-depth study of case law, precedent and interpretation. Additional benefit stems from a set of transparent criteria by which to criticize the jurisprudence of international courts. Firmer ground emerges from which to evaluate the courts’ role in the political process, their societal impact and their legitimacy. At the same time the approach preserves the main features of the distinct legal methodology of international law – especially its attention to legal detail.

On 6 December 2016, the Supreme Court of Denmark (SCDK) ruled on the grounds of Ajos case. The ruling concerned the scope of the principle of non‐discrimination on the grounds of age and whether a national court could weigh the principle of non‐discrimination on grounds of age against the principles of legal controversy, as the protection of legitimate expectations. The ruling has caused a great deal of controversy as the SCDK defied clear guidelines from the Court of Justice of the European Union (CJEU) in the ruling. Moreover, the case has been seen by some as an example of a new ‘sovereigntism’ in Danish law that is at odds with the project of European integration through law. This article explains the case from both an EU law and Danish constitutional law perspective. It concludes by providing a set of explanations of the new course of the SCDK in its relationship with the EU.

As long as the Court goes on handing down judgments that enable ordinary men and women to savour the fruits of integration, it will continue to demonstrate its usefulness.

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