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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 14 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.

Ethan has represented dozens of Chinese companies in resolving their IP disputes in the US, 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 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.

Ethan’s most recent ITC cases include representing a Chinese respondent in 337-TA-985 involving surgical stapler devices, and a Chinese respondent and its US distributor in 337-TA-1015 involving hand dryers. Besides ITC investigations, He also represents clients in US district court cases. For example, he currently represents another Chinese client in two cases before the US District Court for the Central District of California suing a US defendant for infringing a utility patent and a design patent. His recent work on strategic transactions include assisting to form a strategic alliance with Walmart and assisting Baidu in its 150 million US dollars joint investment in Velodyne LiDAR together with Ford.

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.


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.


Amanda MacDonald Employment Law Career Associate Employment Law & Litigation

Wheeling, W.V. (GOC)

Amanda is a member of Orrick’s Employment Law Group. Her practice focuses on a wide variety of employment litigation, including discrimination, harassment, and retaliation claims under federal and state laws; wage and hour claims; trade secrets and unfair competition; and matters involving non-competition and non-solicitation clauses.

Amanda also counsels employers regarding employee handbooks; various employment policies, including leave, confidentiality, and social media policies; and employment separation agreements.

Prior to joining Orrick, she worked as a Litigation Associate for Holland & Knight, LLP in Fort Lauderdale, Florida, where she practiced primarily commercial litigation.  Most recently, Amanda worked for Clark Hill, PLC in Pittsburgh as a labor and employment lawyer.

Amanda graduated from law school summa cum laude and was a member of her school’s law review and a Jessup moot court competitor. While in law school, she earned several CALI Excellence for the Future Awards for being the highest scoring student in many of her law school classes and was awarded the American Bankruptcy Institute Medal of Excellence in 2012.

Amanda is an avid runner. She has completed two half-marathons and hopes to run a full marathon in the near future.


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.


Greer Mackebee Associate Energy, Corporate

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, and other market participants in complex project development, project finance, and corporate transactions, primarily in the energy and infrastructure sectors.

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.


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.


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.


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.


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.