
Freshfields Bruckhaus Deringer LLP’s international litigation practice is well-versed at handling complex cross-border issues, ranging from parallel court proceedings to regulatory investigations. Members of the team are knowledgeable of investigations carried out by the DOJ, SEC, FCA, and other regulators, whilst equally skilled at succeeding in litigation in jurisdictions worldwide. Displaying the team’s cross-border prowess, the team recently represented Sumitomo Pharma in relation to a securities lawsuit in Bermuda. The team works closely with others in the firm, including the white-collar investigations, arbitration, securities, and antitrust practices. Based in New York, Adam Siegel and Gayle Klein lead the team. Tim Harkness handles transnational and cross-border disputes, particularly those involving allegations of fraud, and post M&A disputes. Linda Martin has expertise spanning a broad range of industries, and recently represented Rio Tinto in a climate change-related class action filed in Puerto Rico. Also of note are Kimberly Zelnick, David Livshiz, and in Washington, Jennifer Loeb. The team continues to grow, with the arrival of Matthew Haggans from the US Attorney’s Office in May 2024, and Austin Evers from the Department of Justice in November 2024.
Legal 500 Editorial commentary
- Profile
Key clients
- Rio Tinto
- MTN Group Ltd.; MTN (Dubai) Ltd.; MTN Afghanistan; Phuthuma Nhleko and Irene Charnley (former executives of MTN Group Ltd.)
- London Stock Exchange Group plc (“LSEG”), FTSE International Limited (“FTSE”)
- Varex Imaging Corporation
- CVC Capital Partners
- Tensyr Limited
- Sumitomo Pharma UK Holdings, Ltd.; Sumitomo Pharma America, Inc.; Myovant Sciences Ltd.
Work highlights
- Successfully advising London Stock Exchange Group in a commercial dispute with a US-based counterparty demanding more than US$30 million every year in perpetuity (accounting value of US$500 million).
- Representing MTN, Africa’s largest mobile-service provider, and two of its subsidiaries in challenging the jurisdiction of a US court in a lawsuit alleging that MTN and numerous other large companies violated the Anti-Terrorism Act by committing intentional torts against US servicemembers and government contractors.
- Representing Rio Tinto in US federal climate change class action in Puerto Rico against several oil, gas, and mining defendants.
Lawyers
Next generation partners
Junior partners with significant recognition from clients and peers in the market and key roles on multiple matters.

Leading associates
Leading associates with regular involvement in their team's key work, and recognition from peers or clients as being ones to watch.
Paige von Mehren
Practice head
Adam Siegel; Gayle Klein
Other key lawyers
Tim Harkness; Linda Martin; Kim Zelnick; David Livshiz; Jennifer Loeb; Matthew Haggans; Austin Evers; Paige von Mehren