In 2008 he challenged the Lisbon Treaty in the German Constitutional Court contributing to the famous “Lisbon ruling”. Since 2010, he had led legal challenges against the euro zone bailouts in the German constitutional court. Prof Kerber has also made legal history by challenging decisions of the ECB in the European Court of Justice, on three occasions. He is founder of the Berlin-based think-tank ‘Europolis’ which seeks to encourage free- market competition to promote EU political and economic reform. Prof. Kerber’s work has been extensively published and he is a frequent contributor to Europe-wide TV and radio broadcasts, as an expert commentator on the EU economy. He is in regular demand as a speaker at seminars and conferences.