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  • Intellectual Property
  • Trade Secrets Litigation
  • Patents
  • IP Counseling & Due Diligence
  • U.S. International Trade Commission
  • China

Yufeng (Ethan) Ma Partner Intellectual Property, Trade Secrets Litigation


Yufeng (Ethan) Ma, a partner and the chief representative in Orrick’s Shanghai office, has over 15 years of experience assisting clients in intellectual property (IP) related matters including IP litigation before the US International Trade Commission (ITC) and the federal courts.

In addition to specializing in complex IP litigation relating to patent infringement, ITC 337 investigations, trade secrets misappropriation and unfair competition, Ethan has extensive experience advising clients on IP administrative disputes and reexamination, IP strategies, IP due diligence, and IP aspects of strategic transactions, including licensing or transfer, mergers and acquisitions, joint ventures and collaborations. His clients cover a wide range of industries, including hardwares, softwares, internet, semiconductors, electronics, telecommunications, AI, automobile, chemical, materials, energy and medical devices.

Ethan has represented dozens of Chinese companies in resolving their IP disputes in the US over the years, and earned client’s long-term trust. During his years in private practice, Ethan and his litigation teams won a number of high-profile ITC investigations involving Chinese companies. In one investigation, his clients are four subsidiaries of a large state-owned company of China, who were sued for patent infringement. The Commission reversed the late Chief Administrative Law Judge’s unfavorable decision and found that Ethan’s clients were not infringing and did not violate Section 337. In another investigation, he represented the complainant and its subsidiaries in China suing a group of Chinese respondents for trade secret misappropriation. The ITC issued a 10-year exclusion order against these respondents. This landmark decision represents a new development of trade secret law and ITC jurisdiction in the US, and was upheld by the US Court of Appeals for the Federal Circuit.

Prior to joining Orrick, Ethan served as Director of IP, Asia of a world leader in specialty glass and ceramics, where he was in charge of the company’s daily IP matters in China and throughout Asia. Before that, he was a partner and member of the Board at McAndrews, Held & Malloy in Chicago, Illinois. Ethan was the first non-US born lawyer of that firm.



  • Banking & Finance
  • Energy
  • Infrastructure
  • Debt Capital Markets
  • M&A and Private Equity

Yun Ma Of Counsel Banking & Finance, Energy


Yun Ma, an Of Counsel in Orrick’s Paris office, has a broad range of experience in public-private-partnerships (PPPs), project finance, corporate finance, and commercial law.

She has significant experience in contractual drafting and negotiation.

She frequently coordinates matters across multiple functions and jurisdictions in relation to high-profile and time-sensitive mandates.

Yun specializes in structuring, documenting, negotiating and financing projects and strategic acquisitions, particularly for infrastructure projects related to the energy and natural resources industries in Africa, the Middle East and Eastern Europe. She has significant experience working in China and has worked on a number of Chinese-African matters. Yun’s clients include governments, commercial lenders and sponsors.

From 2010 to 2011 Yun was seconded to the Agence Française de Développement and PROPARCO and has also previously spent nine months on secondment to ExxonMobil.

Prior to joining Orrick in 2014, Yun worked at Shearman & Sterling and Gide Loyrette Nouel in Paris, and previously at Hogan Lovells in Paris and China.



  • Real Estate
  • Real Estate Investment Funds
  • Real Estate Finance

Jacobus D. Machalow Senior Associate Real Estate, Real Estate Investment Funds

San Francisco

Jacobus "Jack" Machalow is a Senior Associate in the Real Estate Group.

He has significant experience structuring development deals, negotiating joint ventures for both capital partners and developers and operators, organizing private real estate investment funds and negotiating and closing acquisitions, dispositions and equity and debt financing transactions. He also regularly represents pension fund advisors, private investors, private equity funds, fund managers and developers in mergers and fund investments.

Prior to joining Orrick, Jack was an Associate in the real estate group of Greenberg Traurig, LLP, in Chicago.



  • Energy
  • Infrastructure
  • Corporate
  • M&A and Private Equity
  • Renewable Energy

Greer Mackebee Associate Energy, Infrastructure

Washington, D.C.

Greer Mackebee is an Associate in the Washington, D.C., office and a member of the firm's Energy and Infrastructure Group.

Greer represents sponsors, investors, utilities, contractors, and other market participants in complex project development, project finance, and corporate transactions, primarily in the energy and infrastructure sectors.


  • Structured Finance
  • Asset Backed Securities
  • Banking & Finance
  • Equity Capital Markets
  • Derivatives
  • Swaps and Other Hedges

John MacKerron Senior Counsel Structured Finance, Asset Backed Securities

New York

John MacKerron, a lawyer in the New York office, is a member of the Structured Finance Group. The focus of his practice is in securitization transactions and derivative financial products, with an emphasis on acting as counsel to the sponsors of, and other participants in, various municipal bond repackaging programs.

John has served in various capacities on the firm's leadership team over the years, including two terms as a member of the Executive Committee.

John was first with the firm from 1984 until 1989 and returned to the firm in 1994. During the interim, he was a Professor of Law at the University of Toledo College of Law from 1989 to 1994 and a Visiting Professor of Law at the Western New England College School of Law in 1994.



  • Public Finance

Jenna Magan Partner Public Finance


Jenna Magan is a Partner in Orrick's Public Finance Department and is the chair of the Public Finance Department's Higher Education and Healthcare Practice Group. She has completed several hundred public finance transactions, providing her with a broad expertise in a number of public finance practice areas.

Jenna has worked on virtually all structures available in public finance, including fixed and variable, tax-exempt and taxable, insured (including FHA mortgage insurance), letter of credit (including FHLB wraps) and liquidity supported bonds, conversions, restructurings and reofferings, senior/subordinate, capital appreciation and convertible capital appreciation bonds, securitizations, project finance, direct purchases, bank-qualified transactions and 144A offerings.



  • Complex Litigation & Dispute Resolution

Siubhan Magee Senior Associate Complex Litigation & Dispute Resolution


Siubhán Magee, a senior associate in the London office, is a member of the dispute resolution team.

Qualified in both New York, and England and Wales, Siubhán has represented clients in both jurisdictions and has particular experience in the areas of professional negligence (having represented each of the Big Four audit firms in connection with the same), hedge fund/investor disputes and financial disputes involving banks.



  • Energy & Infrastructure

Lisa Magged Managing Associate Energy & Infrastructure

San Francisco

Lisa Magged, an associate in the San Francisco office, is a member of the Energy and Infrastructure Group. Her practice focuses on project finance in the renewable energy sector.

Prior to entering law practice, Lisa was a senior analyst for a large research consulting firm.



  • Tax
  • International Tax
  • Tax Litigation
  • M&A and Private Equity

Alessandro Mainardi Partner Tax, International Tax


Alessandro Mainardi is Partner and the Head of the Tax Group in Italy. He has 25 years of experience in domestic and international taxation and he works in Milan and Rome offices.

Alessandro is supported by a team composed of four high seniority professionals coordinating the fiscal analysis of all securitization activities, M&A, restructuring and relocating transaction for Orrick’s Italian and international clients.

Tax litigation has always been a central point for the Tax Group and for Alessandro, who has important successes in this field. For this reason, Rivista dei Dottori Commercialisti di Milano has been giving him the responsibility for the direction of litigation section since 2002.

Alessandro is one of the most respected specialist in wealth management such as in family taxation, generational transfer, trust, asset protection, art investment; these are some of the fields which compose his bouquet of transverse and exclusive knowledge.

Negotiation and mediation are others of his excellence areas: he followed and he is following, for prestigious clients, proceedings regarding the definition of business and family crisis, combining economical, legal and psychological skills.

From 1993 to 1999, Alessandro has lectured on Tax Law at Università di Trento and Pavia and since 1996, he has been lecturing in tax litigation at courses of Ordine dei Dottori Commercialisti.

From 2003 to 2006, he has been a member of the Directors Committee for XX Olympic Winter Games in Turin.



  • M&A and Private Equity
  • Capital Markets
  • Africa
  • Emerging Markets

Bolu Majekodunmi Associate M&A and Private Equity, Capital Markets


Bolu Majekodunmi, an associate in the London office, advises UK and international clients on M&A, private equity, infrastructure and energy transactions.

Bolu's practice has a particular focus on Africa. His experience includes advising various Africa focused private equity sponsors as well as indigenous African companies on cross-border deals.

Bolu is a native of Nigeria and is fluent in Yoruba.


  • Mass Torts & Product Liability
  • Public Policy
  • Complex Litigation & Dispute Resolution

C. Anne Malik Senior Associate Mass Torts & Product Liability, Public Policy

Washington, D.C.

Anne Malik is a senior associate in Orrick's Washington, D.C., office and a member of the firm's Complex Litigation and Dispute Resolution group. With a focus on mass torts and product liability, Anne's practice involves defending companies in a variety of industries against complex tort suits. She also works with Orrick's Public Policy group advising clients on strategies for solving key state legislative issues.

Anne represents clients in product liability cases with high potential damages, multiple jurisdictions and plaintiffs, and significant risk to critical product lines.   She also assists clients with risk analyses involving product liability exposure related to expansions in distribution areas, cross-border sales, and new product lines.

Anne is a member of teams representing product liability clients that include a Fortune 500 chemical company, a European pharmaceutical distributor, and a key defendant in asbestos litigation across the country.  She is experienced in matters involving a wide variety of issues, including medical monitoring, stream of commerce liability (including across international borders), premises liability, and successor liability.   

Anne also works with Orrick's Public Policy group assisting clients with developing strategies to solve high-stakes issues in state legislatures, and with state Attorneys General.  Anne works with teams representing clients that include the country's biggest telecommunications company and an industry-leading satellite TV company.

In addition, Anne takes an active role in pro bono matters.  She assisted a family with obtaining compensation for the fraudulent sale of their home.