Paris boutique Lussan & Associes has landed a profile-raising mandate to advise Societe Generale on its lawsuit against a trader accused of defrauding the French lender and causing losses of around €4.9bn (£3.7bn).

Lussan partner Francois Martineau, whose broad practice covers M&A, banking, business crimes and insolvency, is leading the team advising SocGen on its claim against the trader, Jerome Kerviel.