Amidst the first wave of the coronavirus pandemic, the German Federal Constitutional Court rendered a little-noticed, but potentially far-reaching decision regarding European integration. When it declared the law ratifying the Unitary Patent Court Agreement unconstitutional, it did so because it is a treaty “supplementing or being otherwise closely tied to the EU”, in other words, a satellite treaty, inter-se agreement, or more generally: an international law agreement furthering European integration outside the EU law framework. This commonly used integration technique is therefore going to be a lot more difficult in future whenever Germany is involved. At the same time, the court order gives all German citizens a far-reaching right to have laws ratifying such treaties checked before the Constitutional Court, which is a significant extension compared to its earlier case-law. In future cases of disagreement, EU Member States may have to find different ways to proceed than resorting to international law, such as using the enhanced cooperation mechanism.

Economic governance – Financial assistance – Economic and monetary union – Patent litigation – Treaties between member states – Jurisdiction of the Court of Justice – powers of the EU institutions – Enhanced cooperation

Council Decision of March 2011 to authorize enhanced co-operation as regards unitary patent protection – Proposed Regulations implementing enhanced co-operation in this area – Proposed treaty concerning patent litigation – Challenges to the validity of the decision authorizing enhanced co-operation – Incompatibility of the patent litigation treaty with EU law – EU external competence concerning intellectual property and civil jurisdiction issues

Council Decision of July 2010 to authorize enhanced cooperation for the first time – Planned Regulation on conflicts of law in divorce – Analysis of the application of the substantive and procedural rules applying to the authorization of enhanced cooperation in this case – Links between the planned legislation on this issue and other EU or international rules on related topics – Broader impact of the decision upon the EU legal order