David Zeffman

Graham Iversen focuses his practice on corporate tax matters, including mergers and acquisitions, private equity transactions, joint ventures, partnerships, corporate restructurings, debt and equity finance, derivatives, structured investments, real estate and tax disputes. Graham joined the firm from Slaughter and May in London, where he was a partner in the firm’s London office in their tax department for more than 14 years. He has been a corporate tax attorney for more than 22 years,...

Bill Schnoor is a partner in and former co-chair of the firm’s Technology and Life Sciences groups. He works in all areas of corporate, securities and partnership laws, with a primary focus on advising high-growth technology and life sciences companies. He joined Goodwin in 2005, after a 21-year career with Testa, Hurwitz & Thibeault, LLP, and quickly became co-chair of Goodwin’s technology and life sciences practices. Under his leadership the Technology and Life Sciences grou...

Alistair Maughan leads Morrison & Foerster's European Technology & Commercial Practice. He delivers commercial contracts and technology-based projects for major companies and public sector organizations. He advises on:Commercial licensing and sales contractsService-based outsourcing transactionsTechnology delivery models, such as cloud and as-a-service platformsContracts for the supply and acquisition of technology equipmentKey regulatory issuesServices and softwareAgency and distribu...

Steven Finizio's practice focuses on international dispute resolution. Mr. Finizio also serves as an arbitrator. He has particular experience with energy, financial services, shareholder, joint venture and M&A, and manufacturing issues. He has advised clients regarding disputes under the rules of most of the well-recognized international arbitration institutions and governed by the laws of jurisdictions in Europe, Asia, Africa and the US, as well as under bilateral and regional investment...

Mark's practice covers cross border inward investment, syndicated lending, structured export credit finance, structured trade and commodity finance, debt restructurings and asset finance. Mark is recognized in The Legal 500 UK as "excelling" in structured export credit transactions and is praised for his "commercial and user-friendly approach."Mark advises on ESG financings including hospitals, clean energy and transportation.Mark also advises on financial crime, modern slavery, bribery and c...

Graham Defries is a top attorney recognized by Best Lawyers in the practice area(s) of Life Sciences Law. Graham, who practices law in London, United Kingdom, has been recognized since 2024. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Graham is held by other top lawyers in the same geographic and legal practice area.

Joel D. Harrison is a top attorney recognized by Best Lawyers in the practice area(s) of Information Technology Law and Outsourcing. Joel D., who practices law in London, United Kingdom, has been recognized since 2022. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Joel D. is held by other top lawyers in the same geographic and legal practice area.

Steven Cowins is a top attorney recognized by Best Lawyers in the practice area(s) of Real Estate Law. Steven, who practices law in London, United Kingdom, has been recognized since 2025. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Steven is held by other top lawyers in the same geographic and legal practice area.

Vladimir Maly is a top attorney recognized by Best Lawyers in the practice area(s) of Derivatives. Vladimir, who practices law in London, United Kingdom, has been recognized since 2025. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Vladimir is held by other top lawyers in the same geographic and legal practice area.

Penny Madden is an English qualified Queen’s Counsel and serves as Co-Partner-in-Charge of the London office at Gibson, Dunn & Crutcher. She is Co-Chair of the International Arbitration Practice Group and a member of the firm’s Transnational Litigation Practice Group. She has a wide range of experience in all key aspects of international arbitration with particular expertise in shareholder, telecommunications, SPA, energy, international trade and insurance disputes. She repres...