Jeffrey Kopczynski

O'Melveny & Myers LLP

Jeffrey A. N. Kopczynski specializes in complex business litigation, securities litigation, antitrust investigations and litigation, and eDiscovery litigation and advice. His experience ranges in a variety of forums including multi-district litigation proceedings, regulatory investigations, federal and state court proceedings, and international arbitrations.

Jeffrey’s clients engage him to serve as discovery counsel in complex, multi-front litigations and government investigations, where eDiscovery is often one of the most costly and intricate components to achieving a successful outcome.

A significant part of Jeffrey’s practice also occurs outside of the courtroom, including advising corporations on eDiscovery and data retention best practices, strategies, and policies.

His high-technology background and extensive litigation and regulatory experience provides him with exceptional skills in this area. Jeffrey’s clients include global financial institutions, technology companies, and major airlines, among others.

Jeffrey’s successful outcomes are the result of careful planning, effective and efficient execution, and above all, strong, positive teamwork. Jeffrey bears these components in mind at every stage of a proceeding or investigation so that he can advance his clients’ best interests.

Outside of his practice, Jeffrey dedicates his time to pro bono matters. He has successfully represented two male domestic violence victims in petitions before the United States Citizenship and Immigration Service to obtain adjusted status under the Violence Against Women Act.

He has also served as co-counsel on family law matters with Sanctuary for Families, as co-counsel with the Urban Justice Center in a matter arising from its street-vendor project, and as lead counsel on a significant environmental matter.


  • Representing the world’s largest airline in multiple antitrust-related matters.
  • Advising a global financial institution on eDiscovery strategy as one of its designated eDiscovery subject matter experts.
  • Advised a global corporation on eDiscovery strategy in connection with a software issue affecting many hundreds of active and closed legal matters.
  • Advising several large institutions on preservation and discovery strategies in ERISA-related matters.
  • Successfully defended a multinational electronics company in a multibillion dollar contract dispute.
  • Successfully represented Advanced Micro Devices in its long-running, multi-jurisdictional antitrust litigation against Intel Corporation, which settled on the eve of trial for US$1.25 billion.  This settlement was one of the largest settlements ever achieved in antitrust litigation by a single plaintiff and resulted in Intel’s agreement to a series of game-changing reforms of its behavior in the marketplace and rights to Intel’s patent portfolio.
  • Successfully resolved multiple securities cases on summary judgment and with favorable settlements for global financial institutions in New York, California, and Georgia that alleged misconduct by prime brokers relating to short selling.
  • Successfully represented Northwest Airlines during a merger investigation by the US Department of Justice, Antitrust Division, and in a related private suit filed in federal court to block its merger with Delta Airlines.
  • Successfully represented an Australian-based infrastructure group in a Delaware state court action by a Japanese-based wind turbine manufacturer.
  • Successfully defended a large financial institution in litigation, arbitration, and regulatory proceedings arising from its marketing and sales of auction-rate securities.
  • Successfully represented an international package delivery company in more than 50 putative class action lawsuits in 42 states seeking to reclassify as “employees” thousands of independent contractors engaged in package pick-up and delivery services.
  • Represented a Bermuda-based excess insurer in a coverage dispute arising out of thousands of product-liability claims.
  • Advised a US-based excess insurer on state court coverage litigation arising out of product-liability claims.


  • New York
  • New Jersey
  • US District Court, Southern District of New York and District of New Jersey
  • US Court of Appeals, Second Circuit


  • Rutgers University, J.D.: Honorable Clarence E. Case Scholar; Harold David Feuerstein Scholar; Managing Editor, Rutgers Law Record
  • Whitman College, B.A., History


Rate : $$$

What types of cases Attorney Jeffrey Kopczynski & O'Melveny & Myers LLP can handle?
O'Melveny & Myers LLP can handle cases related to laws concerning Financial Services, Litigation, Government, Aviation, Energy Utilities & Environmental. We manually verify each attorney’s practice areas before approving their profiles and reviews on our website.
Where is O'Melveny & Myers LLP located?
O'Melveny & Myers LLP is located at Times Square Tower, New York, NY 10036, USA. You can reach out to O'Melveny & Myers LLP using their phone line 212-728-5675. You can also check their website or email them at [email protected].
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O'Melveny & Myers LLP
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