Besides the plaintiff in the original case (myself), and Hessischer Rundfunk, the following parties had representatives at the haering: German government, French governement, EU-Comission, European Central Bank (ECB). The Italian government had filed an opinion, but was not present at the hearing. The hearing lasted about three and a half hours. Jduges did not give much indication on how they are likely to rule.
While the German, French and Italian governments argued that limitations on the use of the legal tender euro banknotes and coins do not affect monetary policy and thus are in the peuview of national policies, the ECB and the commission argued that this belonged to monetary policy and was thus an exclusive competency of the EU legislator. The commission held that §14 (1) 2 Law of the Bundesbank which declares euro banknotes to be the only unlimited legal tender is thus not applicable. This would mean that the Bundesverwaltungsgericht could not issue a ruling based on §14 of this law, but rather would have to refer to EU law and follow the indications of the European Court of Justice on how to interpret EU law.
The Bundesverwaltungsgericht had indicated that in its opinion, German law required public authorities to accept cash. The EU-commission to the contrary favours an interpretation of EU-law, which would set very low threshold for limitations of the use of cash for public policy reasons.
The ECB, however, sees room for the law on the Bundesbank to require subnational levels of government to accept cash. If the court followed this line of argument, the Bundesverwaltungsgericht could rule that due §14 Law of the Bundesbank all subnational authorities, including Hessischer Rundfunk, have to accept cash. Obviously, if the court followed the line of reasoning of the national government, which seems unlikely, the same would be true. The ECB would set a much higher threshold for justifications of limitations on the use of cash with public policy reasons than the Commission.
More on the subject
Newly released documents show: There is no legal basis for imposing restrictions on the use of cash