Donald Field Partner, Public Finance
Orange County; Los Angeles
Orange County; Los Angeles
Orange County; Los Angeles
He is also a member of Orrick's Leasing Practice Group, Assessment/Mello-Roos Practice Group, and Revenue Practice Group. Don has extensive experience, as bond counsel, disclosure counsel and underwriter's counsel, in the financing techniques used by school and community college districts, cities and counties in California. His practice focuses on local governmental infrastructure financing, including general obligation bond financing, municipal lease financing, and land-secured financing, as well as tax and revenue anticipation note (TRAN), pension obligation and other post-employment benefit (OPEB) obligation financings. Don serves as the lead lawyer for the California School Boards Association's annual tax and revenue anticipation note pool.
Silicon Valley
In addition to his ITC practice, Bas also heads Orrick’s contentious prosecution practice. He has led more than 30 IPRs and first-chaired more than a dozen trials before the United States Patent Office, as well as represented clients in dozens of trials in district courts, and before PTAB.
As someone with degrees in both engineering and English literature, Bas is uniquely suited to present complicated topics to non-technical audiences. He has represented clients in fields as diverse as semiconductor processing and structure, GPS and geosynchronous satellites, image texture and graphics processing, Internet switches and communications, and various consumer products.
Beijing
Her practice focuses on advising clients on mergers and acquisitions, private equity, capital markets and SEC compliance matters.
San Francisco
Bill is additionally recognized for the results he has obtained in insurance coverage, employee benefits, and federal and state antitrust disputes. He commits a substantial part of his time to pro bono representation and to representation of the firm.
Representing clients in class and derivative actions, Bill's approach is to minimize his clients’ overall cost through careful strategic planning, dispositive motions and aggressive negotiation. Only three of the many securities class actions he has defended have resulted in any settlement payment by his client or its carrier. Of his nearly 100 motions to dismiss securities class, mass or derivative actions since 1996, more than 90 percent were granted in their entirety (most with prejudice), while others were granted in part or led to a successful motion for summary judgment.
Paris
Elle conseille les entreprises françaises et internationales sur tous les aspects du droit du travail. Elle intervient principalement dans le cadre de restructurations, d'opérations de fusions-acquisitions, de transfert d'activité, de relations collectives et individuelles, d'embauche et de depart de dirigeants et de contentieux.
Avant de rejoindre Orrick, Chek-Lhy était collaboratrice au sein du département droit social de Freshfields Bruckhaus Deringer pendant trois et pendant quatre ans chez Linklaters.
Santa Monica
Ernie provides expertise and enthusiasm to help our clients resolve their intellectual property disputes. With a background in molecular biology, cognitive science, and intellectual property, Ernie is adept at helping resolve complex patent disputes across a wide range of technologies from wireless communications to life sciences matters. He also brings valuable litigation and legal writing expertise, having served as a law clerk at the United States Court of Appeals for the Federal Circuit to the Honorable Judge Tiffany P. Cunningham. Ernie also has experience working hands-on with technical experts and in arbitration disputes over patented inventions.
Prior to joining Orrick, Ernie worked at a large law firm in the San Francisco Bay Area representing a client in a CRISPR gene editing patent dispute before the district court and Patent Trial and Appeal Board, as well as indigent clients seeking asylum in the United States.
Ernie graduated cum laude from Santa Clara University School of Law, earning the law school's Mabie Outstanding Graduate Award and a High Tech Law Certificate with a specialization in Intellectual Property Law. He also holds an M. Ed. from Harvard University Graduate School of Education and B.A.s from the University of California, Berkeley in Molecular & Cell Biology and Cognitive Science.
Washington, D.C.
In his government enforcement practice, Ron routinely defends a broad range of clients in the financial services industry before federal and state regulators, including matters initiated by the Consumer Financial Protection Bureau (CFPB), Federal Reserve Board, the Federal Trade Commission (FTC), and state regulators. Ron has experience responding to Civil Investigative Demands (CIDs), managing large-scale discovery, and advising clients on regulatory risks.
In his litigation practice, Ron represents businesses in class actions and complex commercial disputes in federal and state courts. Ron effectively drafts briefs and discovery requests, prepares witnesses for depositions, manages discovery, and conducts complex legal research on a range of issues.
Ron maintains an active pro bono practice, with a particular focus on criminal justice reform. He has helped draft legislation to severely limit the use of solitary confinement in District of Columbia correctional facilities, drafted an amicus curiae brief on behalf of an individual charged with homicide seeking to exclude expert testimony, and reviewed innocence claims for an incarcerated individual.
A fervent advocate for diversity, equity, and inclusion (DEI) at Orrick and in the legal profession, Ron serves on Orrick's DEI committee in D.C.
Prior to joining Orrick, Ron was an associate at Buckley LLP and Fried, Frank, Harris, Shriver & Jacobson LLP. He also clerked for the Honorable Peter G. Sheridan of the U.S. District Court for the District of New Jersey.
Paris
Ahmed intervient dans le cadre de financement de projets complexes. Il conseille des sponsors, parties financières et gouvernements dans le cadre de la structuration et le financement de projets dans les secteurs de l’énergie et des infrastructures en France, en Afrique et en Amérique Latine.
Ses domaines d’intervention couvrent tout type d’opérations de financement (senior, junior, mezzanine, crédit, émissions obligataires, financement multilatéral, financement export, etc.). Il a par ailleurs été récemment impliqué dans le cadre d’opérations de M&A/Private Equity ainsi que de restructurations s’agissant d’actifs stratégiques.
Il a acquis une expérience substantielle dans des opérations de premier plan, en ce compris des financements de projets publics-privés, de transport, de télécoms, de transition énergétique et d’infrastructure sociale.
Avant de rejoindre Orrick, Ahmed a été collaborateur au sein de l’équipe Énergie et Infrastructures d’un cabinet international de premier plan à Paris.
Beijing
Yiping (Sophia) Shen, an associate in Orrick’s Beijing office, is a member of the Intellectual Property (IP) group.
Sophia’s practice focuses on IP-related legal advice and litigation. She advises regional and international clients on their IP issues related to both cross-border disputes and transactions.
Sophia focuses on supporting defense of Chinese companies in patent and trademark litigation before various U.S. District Courts, as well as Section 337 U.S. International Trade Commission investigations.
She has experience in patent, trademark, copyright and trade secret-related matters, responsible for providing legal counseling, conducting due diligence and legal research, and drafting business contracts.
Paris
Bruno possède une solide expérience dans le domaine des opérations de fusions et acquisitions, ainsi qu’en matière de réglementation boursière et de droit des sociétés.
Il accompagne des groupes de sociétés français et internationaux aussi bien côtés que non-côtés.
Par ailleurs, Bruno est le fondateur de « HEAD Afrique », un cercle de réflexion sur la pratique des affaires juridiques sur le continent africain.
Avant de rejoindre Orrick, il a exercé pendant six ans au sein de l’équipe corporate d'un cabinet d'avocats international, et auparavant était dans un autre cabinet de premier plan.
Dusseldorf
He has acted as counsel, presiding arbitrator, sole arbitrator, or chairman in more than 300 arbitration proceedings, including ad hoc proceedings and arbitrations under the rules of the leading arbitration institutions.
As counsel, he represents private investors, international corporations, sovereign states, and state-owned enterprises in a range of significant, complex, and often cross-border disputes.
In addition to counsel work and acting as an arbitrator, Siegfried also acts as an expert witness before German courts as well as courts in the United States and the United Kingdom and before regulatory institutions.
His experience includes disputes in the areas of M&A, energy, investment protection, engineering and construction, financing, joint ventures, and intellectual property.
He is admitted to practice as an attorney-at-law in both Germany and New York.
Chambers Global 2024 describes Siegfried as a "star individual" who is "often appointed as arbitrator in complex international arbitrations" and is also "a leading practitioner in the field of investment arbitration" with "extensive experience as an arbitrator in investment law cases".
Siegfried was a member of the Advisory Board of the American Arbitration Association (2009 to 2020) and a member of the Panel of Conciliators of the International Centre for Settlement of Investment Disputes (ICSID) (2011 to 2017). He was a member of the Board of the German Arbitration Institute (DIS) (2012 to 2022) and has been a member of the DIS Council (since 2022). He was also Chairman of the Mediation Committee of the International Bar Association (IBA) (2007-2008).
He is co-editor of the German Arbitration Journal (Zeitschrift für Schiedsverfahren (SchiedsVZ)). He regularly lectures and publishes on international arbitration and comparative law. Siegfried is also honorary professor at the Faculty of Law at Heinrich Heine University Düsseldorf, where he has been teaching international commercial arbitration and international civil procedure law for 25 years. Since 2013, he represents the Grand Duchy of Luxembourg as Honorary Consul in North Rhine-Westphalia.
Siegfried Elsing co-founded the German law firm Hölters & Elsing in 1989 and has overseen the merger with Orrick in 2008.
Silicon Valley; Seattle
Silicon Valley; Seattle
Michael advises his clients on a broad range of legal needs, including corporate formation and structure, venture capital financings, board and stockholder relationships and exit transactions. His current and former clients are concentrated in interactive media industries including game development, Esports, AR/VR tech, 3D animation, and artificial intelligence. Michael also advises companies in the cleantech and life sciences sectors.
His favorite video game is Final Fantasy (VII), favorite board game is Twilight Imperium (IV) and favorite science fiction book is Ender’s Game.