Home / People / Olivier Marquet
Portrait of Olivier 2021

Olivier Marquet

Managing Partner

Villa des Cigognes
17 rue Louis Aureglia
BP 450
98012 Monaco Cedex
Languages French, English

Olivier Marquet is one of the founding partners of CMS Monaco and the firm’s Managing Partner. He heads the Banking & Finance team. Olivier is an Avocat Défenseur at the Monaco Bar.

Repeatedly recognized as leading individual by prestigious international rankings, Olivier brings over 15 years of experience, advising a wide range of Monegasque and foreign clients, mostly banks and financial institutions.

His expertise includes all types of regulatory issues, financial products and transactions. He assists his clients in, amongst others, the creation or acquisition of a bank or financial institution, banking monopoly, bank secrecy, Franco-Monegasque banking agreements and also monetary agreements between the Principality of Monaco and the European Union. He also advises his clients on the SEPA agreement, measures to combat money laundering, terrorist financing and corruption, Monegasque financial law, Monegasque banking laws, banker's liability law, laws on credit and syndicated loans, credit guarantees, debt restructuring and the preparation of documents for clients to exercise banking and financial activities. His expertise also covers data protection law.

Having a strong track record in contentious matters, Olivier also regularly represents banks and financial institutions, and their executives, in litigation proceedings before Monegasque courts. He also has a significant experience in criminal proceedings.

Olivier’s expertise is widely acknowledged by his clients and independent rankings, such as Chambers & Partners, Legal 500 or Who’s Who Legal.

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Olivier Marquet is the paramount choice for commercial law. Olivier has been advising our firm for years, his strategic thinking and his legal abstraction capabilities helped us to find the most efficient structures and to solve many legal conflicts in and out of court.

Legal 500 EMEA 2021 : Commercial, Corporate and M&A (Monaco)

Olivier Marquet has a strong focus on financial law matters, advising clients on bank guarantees and real estate financing, as well as representing financial sector clients in litigation.

Chambers & Partners 2021 : General Business Law (Monaco)

Olivier Marquet with CMS “has a very large panel of knowledge, which allows him to be very efficient on different matters”. One client effuses that “thanks to his strong experience and efficiency, we always have a good chance to win”.

Who's Who Legal 2021 : Banking: Finance (Monaco)

Olivier Marquet represents private individuals and companies in disputes, as well as advising on real estate financing, market exits and corporate restructurings. Interviewees particularly highlight Marquet for his activity in the banking sector.

Chambers & Partners 2020 : Corporate/Commercial and Dispute Resolution (Monaco)

Olivier Marquet is a standout name for banking matters, renowned for his profound knowledge of the foundation of banks and financial institutions, as well as bank secrecy matters.

Who's Who Legal 2020 : Banking: Finance (Monaco)

The "very strong" team at CMS Pasquier Ciulla Marquet & Pastor is highly regarded for banking, finance and real estate matters. Highlights included key contact Olivier Marquet advising a major global bank on a high-value asset sale.

Legal 500 EMEA 2019 : Commercial, Corporate and M&A (Monaco)

Olivier Marquet is "a thoughtful, diligent lawyer," according to interviewees, who further praise his "deep understanding of my business." He advises clients on a broad range of transactional mandates and has a particular focus on the banking sector.

Chambers & Partners 2019 : General Business Law (Monaco)

Olivier Marquet is praised highly by clients, who highlight his "impressive professionalism and availability as a practitioner". He is considered a specialist in acquisitions and regulatory matters.

Who's Who Legal 2019 : Banking: Finance (Monaco)

Memberships & Roles

  • Participant at the Modernisation Committee of the Business Law in Monaco
  • Accredited Advisor of "Monaco Private Label"
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  • The Law Reviews: The Lending and Secured Finance Review - Monaco Chapter (2021)
  • Getting the Deal Through: Securities Finance - Monaco Chapter (2019, 2020, 2021)
  • Getting the Deal Through: Banking Regulation - Monaco Chapter (2018, 2019, 2020, 2021)
  • Getting the Deal Through: Private Banking & Wealth Management - Monaco Chapter (2017, 2018, 2019, 2020, 2021, 2022)
  • Monaco - Data Protection in the Financial Sector, DataGuidance by OneTrust (2019)
  • Informed client or uninitiated client: legal criteria for distinguishing between the two, Banking & Finance - Monaco (2019-2020)
  • M&A in Monaco, Global Practice Guide, Chambers and Partners (2019)
  • ICOs: an innovative unidentified object for European regulators?, Banking & Finance - Monaco (2018-2019)
  • Disputes when exchanging tax information based on a bilateral agreement, Banking & Finance - Monaco (2018-2019)
  • Article L.511-33 of the Monetary and Financial Code no longer holds any secrets for the Court of Revision, Banking & Finance - Monaco (2017-2018)
  • A Monaco, as elsewhere, fishing (for information) is forbidden, Banking & Finance - Monaco (2017-2018)
  • Electronic signature: is it time to let ink go?, Banking & Finance - Monaco (2016-2017) 
  • Compliance, the territorial principle and the legally binding nature of contracts, Banking & Finance - Monaco (2016-2017)
  • The status of company director, Actions Simplifiées
  • Co-editor of Editions Lexis Nexis-Jurisclasseur, Fascicules de droit monégasque
  • Justice : information, vigilance, supervision, guidance – what obligations must Monaco’s depositary banks meet?, Banking & Finance - Monaco (2015-2016) 
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  • Monaco Bar (2005)
  • Visiting Scholar, Duke University - School of Law (US)
  • Postgraduate Degree in Business Law, University of Nice
  • Postgraduate Degree in International Business Law, Aix-Marseille University
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