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  • Complex Litigation & Dispute Resolution

James V. Aiosa Of Counsel Complex Litigation & Dispute Resolution

New York

For more than 25 years, James Aiosa has represented clients in national and international complex toxic and mass tort litigation, including in state and federal class actions, multi-district litigation, and appeals, involving military, commercial/agricultural, and consumer products and associated chemical compounds.

Jim has deep case management experience, serving as lead coordinating counsel in litigation involving chemical exposures, environmental contaminants, herbicides, pesticides, and fungicides, as well as other chemicals, compounds and products considered persistent, bioaccumulative, and toxic.

Jim has also represented large commercial insurance companies in toxic tort, environmental, product liability, and property damage matters, including cases involving PCBs, TCE, asbestos, and tobacco, as well as employment discrimination class action claims.

Serving as lead counsel, Jim has had extensive involvement in a range of complex mass tort and class action products liability litigation, both foreign and domestic, involving military, consumer, and commercial/agricultural products containing dioxins and furans, hexachlorobenzene (HCB), pentachlorophenol (PCP), arsenic, cacodylic acid, and other organic arsenicals. He has defended chemical product manufacturers against claims involving cancers, endocrine-related disorders, neurological complaints, neurodevelopmental deficiencies and other alleged multi-generational effects, pulmonary and cardiovascular diseases, diabetes, fear of future diseases, and medical monitoring. Jim also has prodigious experience in developing the legal and scientific responses to such claims, including those for medical monitoring and future medical surveillance.

Jim has played an integral role in the development of his clients’ medical and scientific defenses and trial strategies relating to these issues, including the identification and development of medical and scientific expert witnesses and associated arguments and evidence. In the course of his efforts, Jim has worked closely with a range of world-class scientists and clinicians to apply efficiently and effectively principles of toxicology, epidemiology, risk assessment, and biostatistics, in the defense of his clients. Jim also has extensive experience addressing the complex procedural and jurisdictional issues, obstacles, and opportunities frequently presented by complex toxic tort litigation, particularly those venued internationally, including by developing and executing effective strategies for addressing such challenges and controversies both pre-and-post-litigation.

Jim has written extensively on complex/mass tort and related issues, and his articles have appeared in such publications as Mass Torts, LJN’s Product Liability Law & Strategy, DRI – The Voice of the Defense Bar, among other media. Jim serves on the Adjunct Board of Advisors of the US-Korea Law Foundation and was formerly an appointed member of the Nassau County Asian American Economic Advisory Commission.



  • Energy
  • Project Finance
  • Renewable Energy

Helen Aki Associate Energy, Project Finance

San Francisco

Helen’s practice focuses on project development and financing in the renewable energy sector.

During her time at Berkeley Law, Helen worked as a summer legal intern in the Administrative Law Judge Division of the California Public Utilities Commission, as a senior business analyst with Pacific Gas and Electric Company and as a legal trainee at Positive Planet UK.

Prior to law school, she led programs with state and local governments and ratepayer-funded energy efficiency programs to advance the adoption of clean technologies, including battery storage, virtual power plants, commercial and industrial lighting and advanced building control systems.



  • Energy
  • Infrastructure

Walter Alarkon Managing Associate Energy, Infrastructure

New York

Walter counsels private and public companies in their roles as sponsors, investors, lenders, and borrowers in energy and infrastructure projects.

His experience includes drafting and negotiating documentation specific to project finance, tax equity finance, bond offerings, and general corporate matters.



  • Public Finance

Jesse Paul Albani Managing Associate Public Finance

San Francisco

Jesse Albani, a managing associate in the San Francisco office, is a member of the Public Finance Department.

Jesse has experience on a broad spectrum of tax-exempt and taxable financings, including advising issuers, developers and lenders on financings for single family and multifamily housing developments, charter schools, solid waste disposal facilities and general governmental obligations.



  • White Collar, Investigations, Securities Litigation & Compliance
  • Complex Litigation & Dispute Resolution
  • Employment Law & Litigation
  • Trials
  • White Collar

Stephanie Albrecht Senior Associate White Collar, Investigations, Securities Litigation & Compliance, Complex Litigation & Dispute Resolution

Los Angeles

Stephanie Albrecht, a senior associate in Orrick's Los Angeles office, focuses her practice on regulatory and internal investigations and complex litigation.

Stephanie has experience representing companies and individuals in SEC and DOJ investigations involving potential violations of the securities laws, the Foreign Corrupt Practices Act, the False Claims Act, consumer protection laws, and other federal and state laws.  Stephanie also has extensive experience conducting internal investigations and representing clients in securities, trade secrets, employment, and other complex commercial litigation matters.

Additionally, Stephanie devotes her practice to pro bono work, representing clients in adoption, immigration, and civil rights matters. 

Stephanie is a regular contributor to Orrick's Securities Litigation, Investigations and Enforcement blog and an Associate Editor of The World in US Courts: Orrick's Quarterly Review of Decisions Applying US Law to Global Business and Cross-Border Activities.

During law school, Stephanie was a law clerk in the Division of Enforcement at the U.S. Securities and Exchange Commission.



  • White Collar, Investigations, Securities Litigation & Compliance
  • Complex Litigation & Dispute Resolution
  • Trials

William Alderman Senior Counsel White Collar, Investigations, Securities Litigation & Compliance, Complex Litigation & Dispute Resolution

San Francisco

Bill Alderman, a Senior Counsel in the San Francisco office, concentrates his practice on business litigation and dispute resolution. He has broad experience in matters involving federal and state securities, corporate governance, technology, trade secrets, business torts and international disputes.

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.



  • Real Estate

Nicholas Alexsovich Senior Associate Real Estate

San Francisco

Nick is a Senior Associate in the Real Estate Group.

Nick represents leading institutional real estate investors in a wide array of real estate transactions. He has significant experience in advising on, negotiating and closing acquisitions and dispositions of a wide array of real estate assets, commercial leases, secured financing transactions and joint ventures.

Prior to joining Orrick, Nick worked as a bankruptcy and finance associate in Chicago.



  • Complex Litigation & Dispute Resolution
  • International Arbitration & Dispute Resolution
  • Employment Law & Litigation
  • Financial Services Litigation
  • Mass Torts & Product Liability
  • Securities Litigation
  • Investigations
  • China

Charles W. Allen Partner Complex Litigation & Dispute Resolution, International Arbitration & Dispute Resolution

Hong Kong

Charles Allen, a partner in Orrick’s Hong Kong office, heads the Commercial Litigation and International Arbitration practice in Hong Kong.

Charles Allen has over 20 years’ experience conducting high-value complex dispute resolution in the Asia Pacific Region. 

Charles is versatile. He advises and represents clients on a variety of business disputes, as well as regulatory and other investigations, employment law issues and transactions. Charles acts for a range of clients, including individuals, private and listed companies, multinationals, conglomerates and financial institutions.

Charles conducts litigation in the High Court of the Hong Kong SAR, and is regularly involved in cases taking place in courts in other jurisdictions around the Region, including Mainland China, Singapore and India.

On behalf of clients, Charles has handled numerous ad hoc and institutional arbitrations in Hong Kong, London, Lausanne, Paris and elsewhere under various rules including ICC, LCIA, UNCITRAL and LMAA, and has handled some of the highest profile arbitration-related litigation adjudicated on by the Hong Kong courts in recent years. He sits as an arbitrator and has been appointed to the Singapore International Arbitration Centre’s Reserve Panel of Arbitrators. He is also a Fellow of the Chartered Institute of Arbitrators.

Charles has been consistently recognized by various prestigious legal publications such as Chambers Asia, Asia-Pacific Legal 500 and Who’s Who Legal. He gains high praise from his clients and peers for being “very knowledgeable, experienced and down-to-earth”. One impressed source refers to him as a “shrewd tactician” who “brings a wealth of experience to his cases,” adding that he is “very hands-on in his approach.” He is “a very sharp and tactical lawyer – one of the best people to instruct in Hong Kong.”

Prior to joining Orrick, Charles was since 2007 a partner and a member of the Office of General Counsel of Sidley Austin in Hong Kong.



  • Complex Litigation & Dispute Resolution

Robert Allsbrook Of Counsel Complex Litigation & Dispute Resolution

New York

Colby Allsbrook is Of Counsel in the New York office and a member of the Complex Litigation and Dispute Resolution Group.

Colby has deep experience in financial services, asset-backed security and mortgage-related litigation, and has been at the forefront of litigation arising out of the financial crisis.

Prior to joining Orrick, he was a Director and senior litigation counsel at Credit Suisse Securities (USA) LLC, where he chaired the firm's Mortgage Securities Litigation Task Force and helped direct the bank's litigation response to the mortgage crisis. He previously practiced law in the New York offices of King & Spalding and Cadwalader, Wickersham & Taft.



  • Structured Finance
  • Banking & Finance
  • Fintech

Howard S. Altarescu Partner Structured Finance, Banking & Finance

New York

Howard Altarescu is a partner in Orrick’s Finance Group. He co-leads the Firm’s global Fintech team, helping industry participants navigate this complex and evolving sector.

Howard Altarescu advises bank and non-bank financial institutions and governmental agencies in connection with innovative capital markets, debt financing and other transactions, as well as on the implications of financial markets regulation. Howard also co-heads the firm's Fintech team, which is focused on serving a wide array of fintech platforms and other businesses. Howard has previously served as Orrick's Finance Sector Leader, responsible for implementing the firm's strategy to provide distinctive transactional, litigation and regulatory services to financial institution clients globally, as well as co-head of the firm’s Finance Business Unit. In these roles, Howard has a broad strategic, advisory and business development role at the firm, drawing on many years of experience, both in law firms and as a banker helping clients develop innovative financial solutions to meet their objectives.

Most recently, Howard has worked on securitizations and other structured financings backed by marketplace loans and has advised numerous clients on the implications of the Madden v. Midland Funding case, the OCC "fintech charter" and related legal issues. Howard has also recently worked on a number of groundbreaking mortgage credit risk transfer transactions between Fannie Mae and major banks and other clients.


  • Africa
  • M&A and Private Equity

Patricia Amand Licenced Legal Counsel/Partner Africa, M&A and Private Equity


Patricia Amand, a partner at Orrick RCI, is a member of M&A and private equity group.

Patricia’s practice focuses on Telecommunication and Internet regulation including mobile banking issues with a particular focus Africa, Telecommunication and Internet regulation.

She is also Familiar with the common body of commercial and company OHADA laws applicable in 17 countries of Africa.

Prior to Orrick, She was the head of the legal department of a major telecom company in Ivory Coast and Director at the National Agency of the Universal Service of Telecommunications / ICT namely ANSUT in charge of legal and regulatory matters.