International commercial and investment arbitration

wwl_logo_2014     International commercial and investment arbitration


OCA has established itself as a reference in international arbitration and is recognized in every ranking.


Mikaël OUANICHE is noted in the Who’s Who Legal international publication for Arbitration Expert Witnesses and Quantum of Damages.


The arbitration team provides accounting and financial assistance in cases of commercial litigation or in cases related to investments, particularly in the domains of infrastructure, industry and acquisition mergers.


Our teams act as third-party experts at the request of nations, investors and industrialists in disputes regarding in particular; mining and port concessions, expropriation & property seizure, railway construction, infrastructure and public buildings and works sector, etc.

Plaquette Litigation


The OCA Advantage


  • A unique service, recognized and accredited by French and international courts (Paris court of appeals, Paris and Versailles administrative courts of appeal and the international criminal court).
  • An advanced technical expertise applying methods of financial evaluation of economic loss.
  • A precise knowledge of financial compensation reasoning, equally adept in cases of Civil Law as well as Common Law.
  • Our team’s swift reactivity and availability for our clients which include large companies, public organizations and investors.
  • The ability to creatively resolve complex problems by implementing innovative and powerful approaches, while constantly careful to maintain objectivity in cases of financial claims.


Recent cases


  • Post-acquisition disputes: Following allegations of transfer account falsification – Arbitration International Chamber of Commerce (CCI).
  • Port concessions: Assessing loss in the context of expropriation in Africa – Arbitration International Center for Settlement of Investment Disputes [CIRDI] (World Bank Group).
  • Industrial recycling: Cases of loss evaluation resulting from a sorting failure – Arbitration .
  • Mining operations: Assessing loss in the context of a mining permit cancellation – Arbitration CIRDI (World Bank).
  • Railway construction (CAC40): Assessing loss caused by an industrial consortium responsible for electrifying and modernizing a railway line in the Middle East – Arbitration CCI.
  • Rail: Assessing loss of a supplier of an important railway line meant to supply an Asian metal mine following the cancellation of a contract – Dispute adjudication board (DAB) of the CCI.
  • Industrial infrastructure: Assessing the loss of a supplier of an important equipment supplies factory in India caused by significant delays and variations in scope – Dispute adjudication board (DAB) of the CCI.
  • Industrial groups (CAC40): Assisting a loss assessment following a damage to a naval field – Arbitration CCI.
  • Public buildings and works construction: Assisting loss assessment of an international Greek company due to defects found in the construction of a stadium.
  • Public transportation: Assessing loss following the severe malfunction of urban tramways.
  • International luxury company: Assessing loss following an abrupt separation of established commercial relations
  • Automobile industry (CAC40): Post-acquisition litigation – Assessing a buyer’s loss owing to the deceptive practices of the vendor.
  • Pharmaceutics: Assessing loss following the de-referencing of an anticancer drug on the list of medical treatments eligible for refund by social security/insurance plans.
  • National Institute for Research: Assessing loss following allegations of counterfeit certifications given by a partner company.
  • International hotel groups: Assisting the evaluation of operations loss assessment of a luxury hotel (150 rooms) caused by disturbances from nearby construction.
Last update : 07/08/2018