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Jan Erik Spangenberg is a German attorney specialising in international dispute resolution with a particular focus on arbitration and is a founding partner of the boutique law firm Manner Spangenberg. He assists companies, individuals and governments in navigating complex disputes, in particular international commercial and investment arbitrations. He also advises investors and governments on the protection of foreign investments and public international law. In addition, he regularly sits as an arbitrator (chairman, sole arbitrator and party-appointed arbitrator).

Jan Erik Spangenberg has successfully represented clients in numerous high-stakes arbitrations under the major arbitration rules (including International Chamber of Commerce, German Arbitration Institute, Stockholm Chamber of Commerce, Korean Commercial Arbitration Board, International Centre for Settlement of Investment Disputes and UNCITRAL) and in litigation proceedings in German courts. He has handled commercial, corporate, shareholder, post-M&A, compliance, energy, construction and international trade disputes under various laws, as well as claims under bilateral investment treaties and the Energy Charter Treaty. He also has broad experience in mass litigation in the financial and insurance sector. 

Before founding Manner Spangenberg, Jan Erik Spangenberg worked for eight years in the international arbitration practice group of a leading global law firm. He received his doctor of laws and studied law in Germany (Bucerius Law School) and the United States (Washington and Lee University).