The juridification of the European policy process is increasingly fragile, and little understood. This study develops a novel methodology to investigate the influence of Member States on the rulings of the Court of Justice of the European Union (CJEU). The focus is on the domain of copyright law which has seen a dramatic escalation of preliminary references to the Court, indicating a normative void. Examining 170 documents relating to 42 cases registered between 1998 and 2015, we measure empirically the impact of submissions by Member States and the European Commission on the interpretation of copyright concepts. We show that France is the most influential country by some distance, both in terms of the number of interventions (an ‘investment’ in policy) and in terms of persuasive power (arguments adopted by the Court). The evidence also suggests that the departure of the UK from EU litigation will disturb the delicate balance of CJEU jurisprudence.

中文翻译：

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谁在指导欧洲法院的判例？成员国意见书对版权法的影响

欧洲政策进程的司法化越来越脆弱，鲜为人知。这项研究提出了一种新颖的方法，以调查成员国对欧洲联盟法院（CJEU）裁决的影响。重点是版权法领域，该领域的初步参考文献急剧增加，表明存在规范空缺。我们审查了1998年至2015年期间与42个案件有关的170份文件，以经验方式衡量了成员国和欧洲委员会提交的文件对版权概念解释的影响。从干预的数量（政策上的“投资”）和说服力（法院通过的论点）来看，法国都在一定程度上是最具影响力的国家。