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Marcus Weiler

Marcus Weiler, LL.M. London School of Economics and Political Science


CMS Hasche Sigle
Nymphenburger Straße 12
80335 Munich
Languages German, English, French

Marcus Weiler acts as party representative and tribunal secretary in international arbitration proceedings. He advises on commercial and investor-state arbitrations, inter alia, in relation to post-M&A disputes, Life Sciences and investment management.

Marcus joined CMS in 2019.

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  • 2016 - 2018: Trainee lawyer at Berlin Higher Regional Court, including placements at CMS (arbitration), the Federal Ministry of Economic Cooperation and Development and the German Embassy in Accra

  • 2015 - 2016: Research assistant at Hogan Lovells International LLP in Munich and London (commercial and investment arbitration)

  • 2015 - 2016: LL.M. with a focus on international trade law, London School of Economics and Political Science

  • 2011 - 2012: Law studies at Université Jean Moulin Lyon III

  • 2009 - 2015: Law studies at the University of Munich

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  • German Arbitration Institute (DIS)

  • DIS40 (initiative of young arbitrators)

  • ASA Below 40

  • LCIA Young International Arbitration Group

  • ICC Young Arbitrators Forum

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  • Is One Permanent Instance Enough? A Comparison Between the WTO Appellate Body and the Proposed Investment Court System, in: Akbaba, Capurro (eds.), International Challenges in Investment Arbitration (Routledge, 2018)

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Three bites at the apple – the Ger­man Fed­er­al Su­preme Court provides...
Ger­man Fed­er­al Su­preme Court, De­cision of 9 May 2018, I ZB 77/17 In a 9 May 2018 de­cision, the Ger­man Fed­er­al Su­preme Court (BGH) ad­dressed the ques­tion of which ar­bit­ral awards can be chal­lenged in a two-tier ar­bit­ra­tion pro­ced­ure.
CJEU Ad­voc­ate Gen­er­al ap­proves In­vest­ment Court Sys­tem in EU-Canada...
On 29 Janu­ary 2019, Ad­voc­ate Gen­er­al Yves Bot of the EU Court of Justice (CJEU) pub­lished his opin­ion that the in­vestor-state dis­pute set­tle­ment mech­an­ism of the EU-Canada Com­pre­hens­ive Eco­nom­ic and Trade Agree­ment (CETA) is com­pat­ible with EU law.
With or without you - When does a cor­por­a­tion's ar­bit­ra­tion agree­ment...
On 16 Janu­ary 2019, the High­er Re­gion­al Court of Mu­nich (“OLG Mu­nich”) rendered a de­cision that dealt with the ques­tion of wheth­er the per­son­al scope of an ar­bit­ra­tion agree­ment entered in­to by a lim­ited com­pany also ex­tends to its dir­ect­ors.