Mathieu is qualified under the laws of France and England and Wales.
He specialises in resolving high value multi-jurisdictional disputes, by way of litigation or arbitration (under the ICC, LCIA and UNCITRAL Rules) often comprising a cross border element which requires managing parallel litigation in serval jurisdictions (but not exclusively between France and England), seeking worldwide freezing Injunctions, enforcing foreign judgements or orders to trace assets around the world.
Mathieu’s clients seek his expertise from both within and outside the UK on a comprehensive range of disputes including Fraud, IP, Insurance and Insolvency Litigation.
Mathieu has been focusing recently on enforcing or resisting the recognition of foreign judgements (both within and beyond the EU) and of international arbitral awards (whether of a commercial or investment nature). In particular, he has been acting for a foreign State in disputing the recognition of an investment arbitral award (ICSID) in England by challenging the compatibility of its terms on the basis that it constituted illegal State prohibited in the EU, which resulted amongst other things in seeking such an issue to be referred to the CJEU for a preliminary ruling.
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