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ARTICLE · 11 NOVEMBER 2026

Regulator And Practitioner Perspectives On Challenges And Trends In Cross-Border Mergers

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Analysis Group Vice President Markus von Wartburg moderated a ThoughtLeaders4 (TL4) Competition webinar on navigating merger enforcement in cross-border mergers. Panelists included Managing Principal Aditi Mehta (formerly of the Department of Justice Antitrust Division), Competition Expert Pierre Régibeau (former chief economist at the European Commission’s Directorate-General for Competition), Paul Gilbert (Cleary Gottlieb), and John Fedele (Baker McKenzie)

United KingdomAntitrust/Competition Law
Markus Von Wartburg
Markus Von Wartburg
Pierre Régibeau
Pierre Régibeau

Analysis Group Vice President Markus von Wartburg moderated a ThoughtLeaders4 (TL4) Competition webinar on navigating merger enforcement in cross-border mergers. Panelists included Managing Principal Aditi Mehta (formerly of the Department of Justice Antitrust Division), Competition Expert Pierre Régibeau (former chief economist at the European Commission’s Directorate-General for Competition), Paul Gilbert (Cleary Gottlieb), and John Fedele (Baker McKenzie). The conversation covered challenges with cross-border deals, divergence in remedies across jurisdictions, and efficiencies as a focus in Europe.

The group identified several key challenges in navigating cross-border deals. Panelists noted that variation across jurisdictions in statutory review periods and procedures complicates efforts to estimate merger review timelines. Coordinating the pace of review across multiple agencies is a related challenge, particularly when a deal is likely to require remedies in multiple

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