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Isabelle Zakine-Rozenberg Associate Employment Law & Litigation


Isabelle Zakine-Rozenberg is an employment lawyer, based in Orrick's Paris office.

Isabelle advises French and international corporations on all matters related to French Employment and French Criminal Law. She provides advice in pre-litigation and represents clients’ interests before French courts.

Prior to joining Orrick, Isabelle worked at Freshfields Bruckhaus Deringer for twelve years and previously at Bélier & Associés.


Elizabeth Zane Managing Associate M&A and Private Equity, International Trade & Compliance

Washington, D.C.

Elizabeth Zane, an associate in the Washington, D.C., office, is a member of the International Trade and Compliance Group. As part of her practice, Elizabeth regularly advises clients on Export Administration Regulations (EAR), International Traffic in Arms Regulations (ITAR) and regulations administered by the Office of Foreign Assets Control (OFAC).

Elizabeth's experience includes work on internal investigations, voluntary disclosures, commodity jurisdiction requests and developing and implementing compliance programs. Elizabeth also advises clients on government contracting matters.


A. Paul Zarnowiecki Partner Energy & Infrastructure, Renewable Energy

Washington, D.C.

Paul Zarnowiecki is a partner in Orrick's Washington, D.C., office and a member of the Energy and Infrastructure Group. Paul represents sponsors, investors, utilities and other strategic participants in corporate and project finance transactions, primarily in the energy and infrastructure sectors.

Transactions on which Paul has advised include the development, financing, acquisition and divestiture of renewable and conventional power projects and other infrastructure assets in a broad range of commercial and corporate transactions. He has served as lead counsel on some of the most innovative and complex U.S. renewable energy transactions in recent years, including Deal of Year projects in both the wind and solar energy sectors, the U.S. Army’s largest renewable energy transaction to date, and the first power purchase agreement for offshore wind energy in the United States.


Marco Zechini Partner M&A and Private Equity, Banking & Finance


Marco Zechini is a partner in Orrick's Rome office, member of the M&A and Private Equity group and head of the Italian Banking and Financial Services Regulation practice.

He has experience in banking, insurance, financial services and asset management regulation, as well anti-money laundering and the relevant corporate governance matters.

Marco regularly advises banks, financial institutions, payment institutions, IMEL, investment firms, asset management companies, both in authorization procedures (before Bank of Italy and Consob) and in the structuring of new services and products, administrative sanctions proceedings, ad interim measures and sanctions related to the provisions of banking, financial, investment and insurance services.

His work in the financial industry includes drafting of contracts and documentation for offering of banking, financial, insurance and investments products, as well as auditing of internal organizational policies and procedures, partnership, distribution, and outsourcing agreements.

With a solid corporate background, he also handles sophisticated corporate transactions.

Marco is liquidator and member of the Supervisory Board of some intermediaries in crisis by appointment of the Bank of Italy.

Marco Zechini teaches Financial Markets law at the Faculty of Economics of the Rome University ' La Sapienza ' where he is also lecturer to the Master of Financial Markets on solicitation of investment and public sales offers and subscription.

He is adjunct professor to the International University of Rome (UNINT), teaching "e-money and Electronic Funds Transfer."

Marco Zechini is advisor to A.I.F.I. (Italian Association of Private Equity and Venture Capital) in anti-money laundering regulation. He is frequent speaker to conferences organized by prominent financial regulation institutions.


Patricia Zeigler Of Counsel Antitrust & Competition, Antitrust Counseling & Compliance

Washington, D.C.

Patricia Zeigler, Of Counsel in the Washington, D.C., office, focuses her practice on antitrust law with particular emphasis in Hart-Scott-Rodino Act compliance and counseling. Her experience includes advising clients on issues of reportability and interpretations of the Hart-Scott-Rodino Antitrust Improvements Act and its regulations.

Pat also has expertise in the applicability of foreign premerger requirements and filings with regulators in the European Union, Asia and Canada.

Pat served as antitrust counsel to two large industry groups establishing Business to Business exchanges for E-commerce transactions. She currently serves as general counsel to five large trade associations in a wide range of industries. In addition, Pat works with trade groups to set up and run joint purchasing organizations.

Prior to joining the firm, Pat practiced antitrust law for over a decade with Pillsbury Madison & Sutro.

In addition to being admitted in the District of Columbia, Pat is also admitted in California (inactive).


Philippe Zeller Of Counsel Energy, Infrastructure


Philippe Zeller is an Energy & Infrastructure lawyer in Orrick’s Paris office. He provides regulatory and public procurement law advice on public facilities around the world, notably in France and Africa.

Recognized by Legal500 EMEA as a "key figure" in Administrative and Public law, Philippe is an expert in the telecommunications and energy fields and has significant experience in mining. He also advises on both local and large-scale infrastructure development projects in his specialist sectors.

Philippe is often called upon to provide in-depth regulatory expertise on concessions and PPP for high-speed Internet and telecommunications networks as well as hydro power plants. His practice also includes advising on data protection, notably on the implementation of regulatory constraints and requirements in regards to French legislation.

Before joining Orrick, Philippe Zeller worked for Willkie Farr & Gallagher and Langer-Netter-Adler.

In addition to his practice, Philippe teaches Economic Public Law at the University of Paris XII and a "Negotiating and Drafting Contracts" seminar at the University of Toulouse.


Thomas Zellerbach Partner Intellectual Property, Copyright, Trademark & False Advertising

Silicon Valley

Tom Zellerbach, a partner in Orrick's Silicon Valley office, is a trusted advisor and experienced litigator for companies facing important trademark, copyright, advertising, and trade secret issues.  

Tom has has extensive experience in cases before the federal courts, the U.S. Patent and Trademark Office/Trademark Trial and Appeals Board, and the National Advertising Division on behalf of both emerging and institutional clients in a wide variety of industries.  Tom's consistent goal is to get the best result in each particular situation for clients, whether it is obtaining a litigation victory or finding a positive way to resolve a dispute short of litigation.


Yan Zeng Of Counsel M&A and Private Equity, Renewable Energy

Hong Kong

Yan Zeng, an of counsel in Orrick’s Hong Kong office, is a member of the M&A and Private Equity Group.

Her practice focuses on China foreign direct investment, mergers and acquisitions, private equity, venture capital, cross-border financing, corporate governance and tax planning.

Yan’s experience includes working for a number of years in Shenzhen-based management positions. She joined the Los Angeles office of Coudert Brothers in 2004, moved to its Hong Kong office in early 2005, and transitioned with that office to Orrick in late 2005.

Yuanjia (Gina) Zhang Patent Agent Patents

Silicon Valley

Dr. Yuanjia (Gina) Zhang, a patent agent in the Silicon Valley office, is a member of the Intellectual Property Group.  As a patent agent, Dr. Zhang performs tasks related to patent prosecution including preparing and prosecuting patent applications. 

Dr. Zhang has broad technical background and experience in materials science and engineering, electronic devices, nanotechnology, and printing technology.  In particular, her technical areas include nanofabrication, semiconductors, organic electronics, molecular electronics, optoelectronics, electrophotography, inkjet printing, surface engineering, color science, and image processing.

Prior to joining Orrick, Dr. Zhang worked at Anova Law Group, where she prepared and prosecuted patent applications for large Chinese companies and prestigious universities, in industrial areas including Internet technology and semiconductor devices.  Before joining Anova Law Group, Dr. Zhang was a member of research staff in Xerox Innovation Group at Xerox Corporation.  Dr. Zhang also has prior industrial experiences at IBM T.J. Watson Research Center and Advanced Semiconductor Manufacturing Corporation, in Shanghai, China.  Dr. Zhang’s doctoral research focused on the electronic charge injection and transport in nanoscale organic thin film transistors.

Dr. Zhang has technical publications in journals including Advanced Materials and Journal of Applied Physics.  Dr. Zhang is also an inventor with six U.S. patents granted and other U.S. and foreign patent applications pending.


Shelley Zhang Partner Intellectual Property, Patents


Shelley Zhang, a partner in Orrick’s Beijing office, is a member of the Intellectual Property Group. Her practice focuses on IP prosecution and enforcement. Shelley has extensive experience in patents, trademarks, domain names, copyrights and trade secrets.

Shelley's related IP experience includes the following:

  • Patent invalidation proceedings, anti-counterfeiting, anti-piracy efforts and patent and trademark enforcement litigation in China.
  • Prosecution of patent and trademark, including application preparation, office actions/oppositions procedures and reexamination procedures.
  • Enforcement and technology transfer/licensing arrangements for substantial patent and trademark portfolios for companies doing business in China.
  • Advising on IP protection strategies, R&D related IP issues and matters in relation to export and import control of technology.
  • Assisting Chinese companies in Section 337 U.S. International Trade Commission investigation, patent infringement litigations and product liability litigations in the U.S. 
  • IP due diligence and portfolio counseling.

Ning Zhang Partner M&A and Private Equity, Equity Capital Markets


Ning Zhang, a partner in Orrick’s Beijing office, is a member of the Corporate Group, specializing in both M&A and Private Equity and Capital Markets Practices. Mr. Zhang has extensive experience in the areas of mergers and acquisitions, private equity, venture capital and capital markets (both U.S. and Hong Kong).

He is particularly experienced in handling a broad range of complex cross-border transactions involving both private and public companies.

He regularly advises Chinese companies through all stages of their life cycle, from restructuring, debt and equity financings, outbound investments and acquisitions, public offerings in Hong Kong and the U.S. to trade sales and going- private transactions. He also represents international financial institutions, private equity funds and multinationals in numerous investments, acquisitions and divestments in the Greater China region. His regular fund clients include Actis, BAI, CBC Capital, CDH, COFCO Agricultural Industrial Equity Investment Fund, GIC, Goldman Sachs, GSR Ventures, IDG, JAFCO, Matrix Partners, Northern Light, SAIF Partners, Sequoia Capital, TA Associates and Warburg Pincus.

His experience involves various companies in industries including Internet and mobile, technology, media and entertainment, healthcare, consumer/retail, education, financial services, real estate, mining and advanced manufacturing.

Prior to joining Orrick, Mr. Zhang practiced for more than 10 years with O’Melveny & Myers.


Zhaoyu Zhou Of Counsel Corporate, Debt Capital Markets


Zhaoyu Zhou, an of counsel in Orrick’s Beijing office, is a member of the Capital Markets Group. His practice focuses on capital markets, foreign direct investments in China, mergers and acquisitions, joint ventures and other general corporate matters.

Zhaoyu is particularly experienced in representing issuers and underwriters in various initial public offerings on the Stock Exchange of Hong Kong Limited (SEHK), and a broad range of debt and equity offerings.

In addition, he regularly advises Hong Kong-listed companies on a wide range of post-listing compliance matters, including connected transactions, preparation for related announcements, review of annual reports, and provision of advice on the Hong Kong Listing Rules and the Hong Kong Securities Law and Regulation. Some of his clients include Hainan Meilan International Airport Company Limited, Weiqiao Textile Company Limited and Wumart Stores, Inc.

Prior to joining the firm, Zhaoyu worked in the Beijing office of Coudert Brothers LLP and Morrison & Foerster.