Avocats – United States

Marcie Cleary

Partner

Frankfurt Kurnit Klein & Selz PC

Marcie Lape

Partner

Skadden, Arps, Slate, Meagher & Flom LLP

Marco Caffuzzi

Marco Caffuzzi advises clients on a broad range of complex real estate transactions. Marco draws on nearly three decades’ experience and keen business judgment to guide institutional investors, family offices, private equity firms, commercial banks, and private lending institutions through high-stakes, sophisticated real estate matters involving: Financings Joint ventures Acquisitions and dispositions Development transactions, including large-scale public/private development transactions Loan workouts and restructurings Infrastructure-related developments Leasing transactions He deftly navigates transactions with significant structural complexity, time pressure, and execution risk, particularly at critical inflection points in a deal, including situations involving distressed or transitional assets and transactions in the context of broader corporate or capital markets activity. Marco closely coordinates deals across corporate, finance, and restructuring disciplines. He also regularly advises foreign investors, private capital providers, and family offices on real estate investment matters in the US market. Before joining Latham, Marco served as co-head of the global real estate practice and as attorney development partner at another law firm.

Latham & Watkins

Marco V. Masotti

Click here for attorney bio.

Paul, Weiss, Rifkind, Wharton & Garrison LLP

Marcus Barber

Commercial Litigation; Intellectual Property Litigation

Kasowitz LLP

Marcus Chatterton

Partner

Balch & Bingham LLP

Marcus Colucci

Special Counsel, New York

Herbert Smith Freehills Kramer

Marcus Marsh

Marcus Marsh represents traditional banks, business development companies, and other institutional lenders and financing sources such as hedge funds, borrowers, and issuers in a variety of financing transactions, including acquisition financings, senior and mezzanine financing arrangements, and debt restructurings. Marcus also advises clients in matters related to structured finance transactions, including the use of derivatives in securitizations.

Morgan, Lewis & Bockius LLP

Marcus O. Colabianchi

Marcus O. Colabianchi practices in the areas of bankruptcy and creditors' rights, and real estate law in the San Francisco and Palo Alto offices of Duane Morris. He also serves on the firm's Professional Standards Committee, which, among other tasks, evaluates and presents candidates for elevation to partnership. Mr. Colabianchi's bankruptcy and creditors' rights practice includes representing secured and unsecured creditors, financial institutions, business debtors, chapter 7 and chapter 11 trustees, committees, leasing companies, and receivers in all facets of corporate bankruptcy cases and litigation. He handles a variety of complex litigation, workout, restructuring and insolvency matters for lenders and special servicers for REMIC trusts involving Commercial Mortgage Backed Securities (CMBS) loans. Mr. Colabianchi also serves as oversight counsel for special servicers in bankruptcy cases in multiple jurisdictions and states. Mr. Colabianchi's real estate practice includes representation of commercial developers, owners, landlords, tenants, lenders and borrowers in all aspects of disputes concerning commercial properties. His practice includes resolving disputes involving complex commercial lease defaults, breaches of guaranties, mortgage fraud, real estate secured transaction issues, lender liability issues, easements, eminent domain issues and other real estate-related issues.

Duane Morris LLP

Marcus Owens

Partner and Co-Chair, Nonprofits & Tax-Exempt Organizations

Loeb & Loeb LLP

Marcus Sernel

Marc Sernel concentrates his practice on patent and other technology-related litigation with a particular focus on chemical, biotechnology, and computer science-related matters. Representative of Marc’s experience in the biotech area are patent matters involving DNA microarrays, intracellular transcription factors, and transgenic plant technology. Praised in the Legal 500 for his “excellent legal instincts,” Marc has acted as lead counsel and handled all aspects of trial work in district courts and at the International Trade Commission, and has successfully argued at the Federal Circuit.

Kirkland & Ellis LLP

Marcy Geller

Co-Head of Simpson Thacher’s Tax Practice concentrating on a wide range of complex tax structuring, including private investment fund formation, mergers and acquisitions, REITs and real estate transactions, and joint ventures. Advises private equity clients on tax matters related to formation of funds, including real estate opportunity, infrastructure and credit funds, and the structuring of investments by those funds.

Simpson Thacher & Bartlett LLP

Mareesa A. Frederick

Co-leader, ITC Litigation Section

Finnegan, Henderson, Farabow, Garrett & Dunner LLP

Margaret B. Beasley

Meg Beasley represents clients across a wide range of industries in every level of federal and state court, as well as in agency forums. She provides counsel in matters including white collar defense, government investigations, Foreign Agents Registration Act (FARA), sanctions compliance, anti-money laundering, Foreign Corrupt Practices Act (FCPA), and cybersecurity and data breach response. Her practice involves frequent engagement with and presentations to the Department of Justice, the Securities and Exchange Commission and state attorneys general. As pro bono counsel, Meg represents incarcerated petitioners in both federal district and appellate courts, as well as petitioners seeking asylum with the United States Customs and Immigration Service and in Immigration Court.

Bracewell LLP

Margaret Dale

Margaret Dale is a seasoned trial lawyer and first-chair litigator handling complex business disputes across a wide variety of industries and sectors, including consumer products, media and entertainment, financial services, telecommunications and technology, and higher education. Margaret was a former vice-chair of Proskauer's Litigation Department. Margaret’s practice covers the spectrum of complex commercial disputes, including matters involving contracts, bankruptcy and insolvency, securities, corporate governance, asset management, M&A, intellectual property, and privacy and data security. Margaret regularly counsels clients before litigation commences to assess risk, develop strategies to minimize or avoid disputes, and resolve matters outside of the courtroom. Margaret is a frequent writer, including authoring the chapter titled “Privileges” in the treatise Commercial Litigation in New York State Courts (Haig, 5th ed.), the chapter titled “Data Breach Litigation” in PLI’s Proskauer on Privacy, and the chapter titled “Perfecting the Appeal” in PLI’s Principles of Appellate Litigation. She also serves as the lead editor of Proskauer’s blog on commercial litigation, Minding Your Business Litigation. For over 10 years, Margaret co-authored a regular column on corporate and securities law in the New York Law Journal. Margaret maintains an active pro bono practice advocating on issues relating to reproductive rights, women, children, and veterans. She serves on the Board of Directors of CFR (Center for Family Representation), VLA (Volunteer Lawyers for the Arts), and the City Bar Fund.

Proskauer Rose LLP

Margaret Frey

Winston Taylor

Margaret Gatti

Margaret Gatti represents US and non-US companies, universities, and financial institutions in matters involving economic sanctions, export controls under the International Traffic in Arms Regulations (ITAR) and the Export Administration Regulations (EAR), customs and import regulations, free trade agreements, antiboycott regulations (EAR and IRS), anticorruption laws (FCPA and UKBA), anti-money laundering legislation, international commercial sales terms (INCOTERMS), international e-commerce, and Bureau of Economic Analysis (BEA) reporting, as well as national security issues.

Morgan, Lewis & Bockius LLP

Margaret Graham

Margaret Graham, a former federal prosecutor, represents clients in high stakes investigations and enforcement actions, including matters involving complex financial crime, crisis management, and civil rights and equity-related issues. Margaret leverages extensive government, investigative, and trial experience, as well as her strong relationships with a broad network of government officials and lawyers, to counsel clients on their most sensitive matters involving: White collar defense Internal investigations Securities litigation Complex commercial litigation She applies her wide-ranging industry experience, particularly in the Artificial Intelligence space and financial services sector, to provide strategic advice to her clients, who include financial institutions, technology companies, and educational institutions. Before joining Latham, Margaret served for almost 11 years in the US Attorney’s Office for the Southern District of New York (SDNY) and held several prominent roles, including Deputy Chief of the Criminal Division and Acting Chief of the General Crimes Unit. During her tenure, including five years as a member of SDNY’s Securities and Commodities Fraud Task Force, Margaret investigated, tried, and supervised some of SDNY’s most sensitive and complicated white-collar matters, including two of SDNY’s most significant recent corporate resolutions. Margaret led nine jury trials to verdict and argued and briefed more than 15 cases before the US Court of Appeals for the Second Circuit. As the Deputy Chief of the Criminal Division, Margaret supervised the Securities and Commodities Fraud Task Force, Illicit Finance and Money Laundering Unit, and the Narcotics Unit. In this role, she oversaw cases involving a broad spectrum of financial fraud, including cryptocurrency fraud, securities fraud, accounting and valuation fraud, market manipulation, insider trading, sanctions violations, BSA/AML violations, civil and criminal forfeiture, and other matters. Margaret also served as Co-Chair of SDNY’s Artificial Intelligence Working Group, coordinating efforts on AI matters and liaising with other government agencies on AI issues. Margaret served for five years as an Adjunct Professor of Clinical Law at New York University School of Law, where she taught criminal law. After law school, she clerked for Judge Kenneth M. Karas of the US District Court for the Southern District of New York and Judge Gerard E. Lynch of the US Court of Appeals for the Second Circuit.

Latham & Watkins

Margaret Rosegay

Pillsbury Winthrop Shaw Pittman LLP

Margaret Sampson

Margaret J. Sampson, Ph.D., focuses her practice on global, strategic intellectual property transactions and patent counseling surrounding the areas of life sciences, pharmaceuticals, research tools and medical devices. Life sciences and technology clients turn to her for evaluating, structuring, negotiating and documenting major transactions. Margaret’s extensive experience includes advising clients in evaluating patent portfolio positions; analyzing freedom-to-operate issues; identifying and evaluating targets for potential investment, mergers or acquisitions; Hatch-Waxman patent litigation; patent term extensions and adjustments; and patent office proceedings. She is highly skilled in a variety of transactions such as inbound and outbound licensing and option agreements, development and collaboration agreements, clinical research agreement, clinical and commercial supply agreements, manufacturing agreements, sponsored research agreements, technology transfers, and royalty monetization transactions. Margaret also has a significant research background, focused on molecular genetics, recombinant DNA and stem cell research, including making mouse knock-out models to better understand the function of genes in an organism.

McDermott Will & Schulte

Margaret Segall

Maggie Segall is a member of Cravath's Antitrust Practice. Her practice focuses on transactional matters, antitrust regulatory approval, and government investigations, including civil conduct investigations brought by both federal and state antitrust authorities, as well as general antitrust counseling and critical antitrust litigation. Named “Dealmaker of the Year” by Global Competition Review (GCR) in 2025, Ms. Segall is described as “truly one of the finest antitrust attorneys” and “prolific in securing clearances for high-value mergers, as well as advising clients on government investigations.” (The Legal 500 US) Her clients cover diverse industries, including aerospace and aviation, pharmaceuticals, life sciences, consumer products, media, manufacturing and technology.

Cravath, Swaine & Moore LLP

Margaret Tahyar

Partner

Davis Polk & Wardwell LLP

Margaret Tough

Linda M. Inscoe, a litigation partner in the San Francisco and Silicon Valley offices of Latham & Watkins, is Co-chair of the firm’s Employment Law Practice. She is a member of the Employment, Benefits & Compensation Practice, and has jury, bench, administrative agency and binding arbitration trial experience.

Latham & Watkins

Margaret Warner

Margaret Warner has served as first chair trial and appellate counsel in state and federal courts in over 30 jurisdictions. Her work has spanned antitrust, commercial, class action, environmental, healthcare, insurance, mass tort, product liability and reinsurance disputes. Margaret has taken numerous cases to verdict/judgment before juries, judges and arbitration tribunals. Many of her cases have involved high-profile public policy issues from the Agent Orange litigation in the 1980s, environmental and Superfund litigation involving such notorious sites as Love Canal and the Hudson River in the 1990s, to sexual abuse, 9/11, antitrust, healthcare, ERISA and COVID-19 litigation in the 21st Century. Please visit McDermott website for full biography: https://www.mwe.com/people/warner-margaret-h/

McDermott Will & Schulte