Antitrust Law Daily Wrap Up, LAW FIRM NEWS: Antitrust attorneys welcomed by new firms, obtain promotions, (May 7, 2025)

By WK Editorial Staff

In addition, antitrust attorneys were recognized for their accomplishments in the field.

Law firms continued to announce new hires (or rehires), as well as promotions within their firms in their antitrust practice groups. Firms also have acknowledged recognition of their antitrust attorneys by the likes of MergerLinks, Crain’s Chicago Business, Lawdragon, and The Legal Intelligencer.

On the move. Axinn, Veltrop & Harkrider has announced that veteran litigator Mary Helen Wimberly has joined its Antitrust practice as a partner in the Washington, D.C. office. Wimberly comes from the Department of Justice, where she has almost a decade of high-level experience with the Justice Department’s Antitrust Division. Her work has ranged across the full gamut of antitrust matters, from merger challenges to cartel investigations to civil conduct cases. Wimberly served as the case lead in major civil and criminal enforcement matters and worked on cases from trial through appeal. She has also worked for the Office of the Deputy Attorney General and served as a House Judiciary Committee staff member.

BakerHostetler has welcomed Timothy Longman to its Washington office as a partner in the Litigation Practice Group. He will also be a member of the firm’s Antitrust and Competition team. Longman comes to BakerHostetler after 10 years with the Antitrust Division. His previous experience in the private and public sectors includes handling both antitrust litigation and antitrust merger clearances. As acting assistant chief of the Antitrust Division’s Civil Conduct Task Force, Longman oversaw the prosecution of complex antitrust conduct claims, including the recent U.S. v. Google monopolization case relating to its advertising technology business. During his tenure with the Justice Department, he also represented the government in matters involving a range of industries, including technology platforms, advertising, real estate and agriculture.

In another move from the Justice Department, Brian Boynton, the former head of the Department of Justice Civil Division, rejoined Wilmer Hale as chair of the firm’s Government and Regulatory Litigation Practice. The firm noted that Boyton, while at the Civil Division, oversaw consumer protection enforcement efforts among other matters. Boynton’s practice will focus on representing clients in high-stakes litigation and regulatory matters, according to the firm.

Moving between firms, Marin Boney has joined Freshfields as an antitrust partner in Washington DC where she will focus on merger control and antitrust advisory work for private capital clients, the firm announced. Boney represents clients before the FTC and Justice Department in merger reviews of complex cross-border transactions, with an emphasis on serving private capital clients. Her practice ranges across a variety of industries, particularly software and technology, energy, healthcare and consumer products and services transactions. Boney was formerly with Kirkland & Ellis.

Also, Sidley Austin LLP has announced that Mary Marks has joined its New York office as a partner in the firm’s Antitrust and Competition practice. Marks comes from Davis Polk & Wardwell LLP. She concentrates on analyzing U.S. and multinational transactions and obtaining clearance under the Hart-Scott-Rodino (HSR) Act and global merger control laws. She also advises clients on permissible pre-clearance and pre-closing coordination and information sharing, along with inadvertent failures to file under the HSR Act.

White & Case LLP has expanded its Global Antitrust Practice by adding Euan Burrows as a partner in the firm’s London office. Burrows provides advice to clients on competition law, state aid and procurement law matters. Additionally, he has experience dealing with the European Commission, the U.K. Competition and Markets Authority, the U.K. Competition Appeal Tribunal and proceedings before the High Court in England. His practice encompasses competition law investigations, competition and procurement law litigation, regulatory challenges, judicial review, merger control and the general application of competition law to a wide range of commercial agreements. Euan comes to White & Case from Ashurst, where he was a partner and global head of the antitrust, regulation and trade team.

Further, Goodwin has announced that Athena Kontosakou has joined the firm’s Antitrust and Competition practice, where she is a partner in the firm’s newly opened Brussels office. Kontosakou has worked on a number of high-profile unilateral conduct investigations before the European Commission and Courts. She advises on all aspects of European competition law, concentrating on antitrust, merger control, unilateral conduct and state aid law matters. She has experience with litigation before the European Courts involving numerous industries including technology and telecommunications, financial services and energy.

Additionally, Wilson Sonsini Goodrich & Rosati has welcomed Michele C. Lee, a respected practitioner in complex litigation, global regulatory strategy, and executive counsel. She joins Wilson Sonsini as General Counsel in Residence. Lee has counseled major technology companies on a variety of matters. She comes to Wilson Sonsini from Pinterest, where she served as general counsel, advising the executive leadership team and board of directors on the creation of innovative strategies to address complex legal and reputational risks. Previously, Lee served as associate general counsel at Twitter, overseeing global litigation, regulatory, and competition matters. She has also held leadership roles at Visa and the Justice Department.

Moreover, Greenberg Traurig, LLP has added well known antitrust litigator Bill Katz as Global Co-Chair of the Antitrust Litigation & Competition Regulation Practice. Katz will be based in Dallas and Washington, D.C. and comes from Holland & Knight. In addition to advising clients on various antitrust matters, Katz represents clients before federal and state trial and appellate courts, arbitration panels, and administrative agencies, including the Justice Department and the FTC. He has been Co-Chair of the Trial Practice Committee of the American Bar Association’s Antitrust Law Section since 2022.

Promotions. Freshfields announced the appointment of 25 new Partners and 40 new Counsel, effective May 1. The Partner promotions include three new partners in the Antitrust, Competition and Trade group: Aaron Green and Janet Lang in Brussels and Alvaro Pliego Selie in Amsterdam. The Counsel promotions for antitrust include: Mathilde Beaumunier and Marie-Theres Urban in Berlin, Claire Leonard in Washington D.C., and Tuna Tanik in Brussels.

David Brenneman has jumped from Morgan Lewis to Latham & Watkins. Brenneman brings a wealth of merger control experience defending major transactions before the Justice Department, FTC, and European Commission, among other competition law authorities, Latham & Watkins said in announcing the move. Brenneman has joined the firm’s Washington, D.C. office as a partner in the Antitrust & Competition Practice and a member of the Litigation & Trial Department.

Clifford Chance announced the promotion of 31 partners to the global partnership, and four new Senior Counsel and 40 new Counsel appointments across its European offices on April 29. Among the antitrust and competition promotions in Brussels were Aleksander Tombinski (Partner), Nivi Balaji (Counsel), Jonathan Blondeel (Counsel), and Carmen Puscas (Counsel).

Recognition. Kirland recognized some of its antitrust attorneys for their accomplishments. MergerLinks, a data intelligence platform, has named Kirkland partner Andrea Murino one of the “Top Antitrust Lawyers in North America.” This group comprises attorneys who had the highest volume of transactions and highest-value deals in the area in 2024. Murino focuses on securing clearances for proposed transactions from the Antitrust Division, the FTC, state attorneys general and international competition law enforcement agencies. Additionally, Crain’s Chicago Business has recognized Kirkland partners Diana Watral and Rebecca Fitzpatrick among its 2025 “Notable Litigators and Trial Attorneys.” This list honors attorneys who “advocate for clients in complex disputes and influence legal developments nationwide.” Watral is a litigation partner and trial lawyer in Kirkland’s Chicago office. She represents companies in a broad range of business disputes, with recent experience in antitrust among other matters. Also in Chicago, Fitzpatrick focuses on fact- and science- intensive complex commercial litigation.

In addition, DiCello Levitt has announced the recognition of several of its partners in Lawdragon’s 2025 list of 500 Global Plaintiff Lawyers, including Antitrust and Competition Litigation lawyers Greg Asciolla and Greg Gutzler.

Also, Berger Montague has announced that Andrew Curley has been named a finalist in the 2025 Best Law Firm Mentor category of The Legal Intelligencer Pennsylvania Legal Awards. Curley is Co-Coordinator of the firm’s Opportunity and Employee Engagement Team, the mission of which is to enrich the firm with multiple perspectives to foster teamwork, encourage employee growth, and create opportunities to serve a broader set of clients.

Attorneys: Mary Helen Wimberly (Axinn, Veltrop & Harkrider LLP). Brian Boynton (Wilmer Cutler Pickering Hale and Dorr LLP). Marin Boney (Freshfields LLP). Mary Marks (Sidley Austin LLP). Euan Burrows (White & Case LLP). Athena Kontosakou (Goodwin Procter LLP). Michele C. Lee (Wilson Sonsini Goodrich & Rosati). Bill Katz (Greenberg Traurig, LLP). Aaron Green, Janet Lang, Alvaro Pliego Selie, Mathilde Beaumunier, Marie-Theres Urban, Claire Leonard, Tuna Tanik (Freshfields). Andrea Murino, Diana Watral, Rebecca Fitzpatrick (Kirkland & Ellis LLP). Greg Asciolla, Greg Gutzler (DiCello Levitt LLP). Timothy Longman (BakerHostetler LLP). Andrew Curley (Berger Montague). (Davis Polk & Wardwell LLP). (Ashurst LLP). (Holland & Knight LLP). David Brenneman (Latham & Watkins LLP). (Morgan, Lewis & Bockius LLP). Aleksander Tombiński, Nivi Balaji, Jonathan Blondeel, and Carmen Puscas (Clifford Chance LLP).

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