London
In addition to sheer volume of deals, Shawn's incomparable market insight stems from his leadership roles at Orrick, the only global firm focused on technology, and his experience working throughout the UK & Europe, North America and Asia. Shawn leads Orrick's London Corporate practice, its Global Emerging Markets practice and co-leads the Global Fintech team and the Global Technology Companies Practice Group. These complement his practice serving public and private companies in UK multi-jurisdictional and complex corporate transactions, including countless acquisitions and disposals, cross-border mergers, bankruptcy infused asset sales, recapitalisations and reorganisations. He is also a recognised leader in late stage venture transactions and in early stage private equity transactions in Europe and the emerging markets.
Shawn also advises early stage businesses across a number of sectors – including insurtech, Fintech, Crypto, SaaS, EdTech, HRTech, Marketplace and EnergyTech. He assists them from incorporation through to M&A exit, initial public offerings and other growth opportunities. His participation in the private equity and venture capital sector spans his entire career - with time spent in private practice, in-house and advising investors as well as investor-backed businesses-and affords him a deep knowledge and understanding of the industry and client needs and expectations.
Among the leading investment funds he has represented are ABN Amro Ventures, Acton Capital Partners, ABRY Partners, Accel Partners, Apax Partners, Bain Capital, Balderton Capital, Battery Ventures, Beringea, Bessemer Venture Partners, Black Pearls VC, Black Sheep Ventures, BMWi Ventures, Coatue Management, Columbia Capital, CommerzVentures, Evolvence, FTV Capital, Golden Gate Capital, Stepstone Group, Headway Capital Partners, Innova Capital, Kinnevik, KPS Capital Partners, Marlin Equity Partners, Mangrove Capital Partners, M/C Partners, One Peak, Oxx, Pearson Ventures, Piper Private Equity, Piton Capital, Salesforce Ventures, Sprints Capital, Summit Partners, Updata Partners, VNV Global and VEF.
London
Mark leads Orrick’s global international arbitration practice group, and acts as advocate and counsel whether in international arbitrations (both commercial and investor-state) or in litigation in the English and DIFC courts. He has particularly deep experience in energy disputes, but also regularly acts in construction, technology, insurance, shareholder and white-collar/civil fraud matters (including advising on sanctions and export controls).
Mark has acted in arbitrations under all the major arbitration rules in disputes seated around the globe involving a wide range of governing laws and sits as arbitrator (including both as chairman and sole arbitrator). He previously practiced in Dubai as a Registered Foreign Lawyer and maintains a practice as advocate (and solicitor) in both the English and DIFC Courts (along with supervising cross-border litigation in multiple other jurisdictions). He is recognised in the leading directories for arbitration, litigation and natural resources disputes (including Chambers & Partners, Legal 500, GAR and Who’s Who). In addition, he has been recognised as a foreign expert in disputes in both the UAE and India by Chambers.
He has a particular interest in energy sector disputes, including those in the upstream and LNG areas he knows “oil and gas inside out” and is “as knowledgeable as anyone about international arbitration in the energy sector, specifically oil, gas and renewables” (Chambers & Partners UK ) and is recognised in Who's Who Legal for Energy, Chambers UK for Energy & Natural Resource Disputes and Legal 500 for Oil & Gas), but has dealt with matters across the industry, running the gamut from seismic acquisition agreements through to IP disputes involving refined products, carbon trading agreements and the construction and licencing of renewable projects. He recently led the AIEN Model Form Revision sub-committee focusing on the dispute resolution aspects of the model form JOA.
As illustrated below, beyond energy, Mark has acted in the infrastructure/construction, technology, insurance, fintech, pharmaceutical, telecoms, insurance and finance sectors (amongst others) and also advises extensively (both in the advisory context and in leading investigations/claims) in relation to white-collar/fraud matters, including money laundering, bribery, sanctions and export control issues.
Originally called to the English Bar and now practicing as a solicitor-advocate, Mark frequently publishes and speaks on arbitration and energy matters, including on questions of sovereign immunity, res judicata, arbitration procedure, the award of interest and other questions on damages. Mark serves as a member of the ICC's Commission on Arbitration & ADR, as well as on the ICC UK's Arbitration & ADR Committee. He also leads Orrick's London Office.
Paris
Geoffroy advises on public contracts, particularly in the context of concessions and PPPs. He has been involved in projects relating to the financing, construction and operation of the Stade Vélodrome in Marseille; the Sud Europe Atlantique high-speed line; the Athletes' Village for the Paris 2024 Olympic Games; the Grand Paris Express and the offshore extension of the Principality of Monaco. He has also worked on several French highway (A412, A69, RCEA, A88, A41, A150), port (Calais, Cannes) and airport projects (Nice, Lyon, Beauvais).
In the renewables field, he acts alongside the French government (Ministry of Energy Transition) in calls for tenders for the construction of offshore wind farms, including floating wind turbines, and advises operators in the realization of biomass and geothermal projects, as well as investors in the context of "M&A" operations concerning wind and solar assets and methanization. He also has experience in hydroelectricity matters. He advises both sponsors and lenders and works regularly with public entities and governments. He also advises on the drafting and negotiation of corporate PPAs, acting for both energy producers and buyers.
Geoffroy Berthon is recognised by clients as "a high quality lawyer whose analyses are very precise and rigorous and whose pragmatic approach is highly regarded" (Legal 500) and as a Leading Individual by Legal 500 (EMEA 2023) in public law and energy.
Geoffroy holds a doctorate in public law, was a lecturer in public contract law at Sciences Po, and frequently published in both English and French.
Paris
Her practice covers the development of projects, particularly in the energy and infrastructure sectors, notably within the framework of public contracts such as concessions and PPP contracts, as well as the regulatory aspects of regulated activities. She also handles litigation in these sectors.
She advises both sponsors and lenders, and also works with public entities.
Constance started her career at Orrick in 2013, before joining the project finance legal desk of Bouygues Construction at the end of 2018 for two years. She rejoined Orrick in 2021.
Washington, D.C.
Harry is experienced in areas such as CFIUS/Exon-Florio examinations of foreign investment, military and “dual use” export control regulations (ITAR/EAR), economic sanctions administered by the U.S. Treasury Department (OFAC), customs regulations, the Foreign Corrupt Practices Act, anti-money laundering rules, anti-boycott requirements and defense industrial security requirements. He executes internal corporate investigations regarding trade and investment rules and advises on such rules in the context of corporate transactions.
Additionally, Harry has extensive experience with government contracting matters. His government contracting work has included, for example, design and implementation of U.S. Defense Department renewable energy projects. He also represents broad industry coalitions on major trade litigations and international negotiations. His experience in these areas includes a leading role in what is often considered the largest-ever international trade dispute: the controversy regarding unfair softwood lumber imports from Canada. It has involved myriad administrative proceedings before federal agencies, NAFTA panel appeals, WTO dispute proceedings, judicial proceedings and international settlement agreements.
Harry has represented a coalition of major U.S. oil companies in antidumping and countervailing duty litigation. As a related matter, he pursues policy issues with congressional and executive branch officials and advises on international trade rules (e.g., GATT, WTO agreements and NAFTA).
Chambers 2022 recognizes Harry as a leader in the field of export controls and economic sanctions (Chambers Global and Chambers USA), as well as CFIUS (Chambers USA). Previous editions have also recognized Harry’s achievements regarding his work related to the Foreign Corrupt Practices Act. Clients note that Harry provides “accurate, straightforward guidance incredibly efficiently” and “he has an ability to translate complex legal requirements and rules into business-friendly jargon.”
New York
Kathy's practice involves advising issuers, underwriters, servicers and institutional purchasers on complex financial transactions. She has extensive experience with the securitization of a variety of assets, including mortgages, tax liens, tobacco litigation settlement funds, utility stranded costs and student loans.
Kathy's mortgage-backed experience has involved all types of mortgages including fixed and adjustable rate first lien mortgage loans, closed end seconds, revolving home equity lines of credit, seasoned mortgage loans, reverse mortgage loans and manufactured housing contracts. She has represented many types of financial institutions, including private companies, governmental agencies and municipalities.
She has been involved in the development of a number of novel securitization structures and programs designed to achieve the client's goals. In addition to securitizations, she has been involved in establishing joint ventures, financing of assets, acquisitions of assets and litigation support and advice.
Recently, Kathy has been involved in advising clients on a number of innovative transactions that address issues arising from the financial crisis and housing and financial regulatory reform. Representative transactions include representing the sponsor and issuer of the first public offerings of private label residential mortgage-backed securities since the advent of the financial crisis, advising a federal agency on the securitization of seasoned assets, and advising the largest issuer of tax lien securitizations. She has also been involved in various initiatives to address regulatory reform proposals.
Kathy is former Chair of the Structured Finance Group. She has also served on the Firm's Executive Committee and as Chair of the Firm's Women's Initiative.
Düsseldorf
With his extensive experience, he advises on complex cross-border transactions, including real estate portfolio deals, the formation of joint ventures, the establishment of funds and restructurings. He advises both national and international private equity firms, companies and fund managers and offers solutions for management participation programs and liability issues.
Oliver Duys' expertise extends in particular to advising companies from the Middle East and India, whom he supports in a variety of international M&A projects.
Oliver Duys has been repeatedly recommended by Legal 500 and Juve and is listed as one of the best lawyers in Germany in the field of M&A by Handelsblatt. His clients value him for his confident negotiation skills and his strength in dealing with complex negotiations.
Düsseldorf
He has acted as counsel, presiding arbitrator, sole arbitrator, or chairman in more than 300 arbitration proceedings, including ad hoc proceedings and arbitrations under the rules of the leading arbitration institutions.
As counsel, he represents private investors, international corporations, sovereign states, and state-owned enterprises in a range of significant, complex, and often cross-border disputes.
In addition to counsel work and acting as an arbitrator, Siegfried also acts as an expert witness before German courts as well as courts in the United States and the United Kingdom and before regulatory institutions.
His experience includes disputes in the areas of M&A, energy, investment protection, engineering and construction, financing, joint ventures, and intellectual property.
He is admitted to practice as an attorney-at-law in both Germany and New York.
Chambers Global 2024 describes Siegfried as a "star individual" who is "often appointed as arbitrator in complex international arbitrations" and is also "a leading practitioner in the field of investment arbitration" with "extensive experience as an arbitrator in investment law cases".
Siegfried was a member of the Advisory Board of the American Arbitration Association (2009 to 2020) and a member of the Panel of Conciliators of the International Centre for Settlement of Investment Disputes (ICSID) (2011 to 2017). He was a member of the Board of the German Arbitration Institute (DIS) (2012 to 2022) and has been a member of the DIS Council (since 2022). He was also Chairman of the Mediation Committee of the International Bar Association (IBA) (2007-2008).
He is co-editor of the German Arbitration Journal (Zeitschrift für Schiedsverfahren (SchiedsVZ)). He regularly lectures and publishes on international arbitration and comparative law. Siegfried is also honorary professor at the Faculty of Law at Heinrich Heine University Düsseldorf, where he has been teaching international commercial arbitration and international civil procedure law for 25 years. Since 2013, he represents the Grand Duchy of Luxembourg as Honorary Consul in North Rhine-Westphalia.
Siegfried Elsing co-founded the German law firm Hölters & Elsing in 1989 and has overseen the merger with Orrick in 2008.
Washington, D.C.
Washington, D.C.
His public finance practice includes representation of issuers or underwriters in long-term and short-term general obligation and revenue bond financings for municipalities, charter schools, educational facilities, and water and power authorities and advising clients on economic development incentives.
Before joining Orrick, Darrin was counsel within the Public Finance Group at Hunton & Williams LLP. He also has served as chairman, director or member of several boards and commissions including:
New York
Bill regularly advises clients on cross-border matters, including transactions in the maritime, energy and infrastructure and technology sectors. He has particular experience in the maritime sector, having guided various market participants on numerous complex international shipping and offshore corporate and capital markets deals and restructurings.
Reflecting feedback from his clients, Bill was named a BTI “Client Service All-Star” and is described by an IFLR1000 client commentator as “extremely responsive” with a “deep spectrum of knowledge,” in Banking and Finance.
Before joining Orrick in 2002, Bill practiced with two other international law firms in New York and Paris.Paris
Foucaud's practice focuses on public-private partnerships and concession projects, as well as on privatizations and acquisitions in the infrastructure and energy sectors. He also advises on the financing aspects of infrastructure projects.
Having solid experience in emerging markets, Foucaud has been involved over the past few years in the development and financing of various large-scale projects, in particular in the fields of energy (renewables, natural gas) and transportation.
Prior to joining Orrick, Foucaud worked for a leading French law firm, both in the Moscow and Paris offices
Paris
Frédéric assists his clients in litigation arising from commercial, industrial and financial disputes, corporate law and insolvency proceedings, both before the French courts and in multi-jurisdictional cases – notably in Africa before the courts of OHADA jurisdictions.
He also assists his clients in international arbitration and alternative dispute resolution proceedings.
Frédéric advises French and foreign groups in investigations by administrative or judicial authorities involving bribery and corruption issues. He has deep experience in internal investigations (national and cross-border), and in the implementation of compliance programs.
Frédéric is serving a three-year term (2025-2027) as a member of the Paris Bar Council. He is consistently ranked as a leading litigator in France by the major legal benchmarking directories. He is the author of several publications on developments in litigation and anti-corruption regulation.