Karen Pérez del Valle

Karen advises clients on the full spectrum of Mexican competition law matters, including merger control filings, cross-border M&A transactions, strategic alliances and joint ventures, cartel and abuse of dominance investigations, vertical restraints, antitrust compliance programs, internal investigations and dawn raids.

She also represents companies in proceedings involving unlawful concentrations, barriers to competition, essential facilities and effective competition conditions. Her experience allows her to integrate economic analysis with legal strategy to deliver practical and business-oriented solutions to complex regulatory and commercial challenges.

• Advised domestic and multinational companies on Mexican merger control requirements for complex acquisitions, strategic alliances and cross-border transactions, including filing strategies, substantive competition assessments and regulatory approvals.
• Represented companies in merger control proceedings before the Mexican competition authority, addressing market definition, market shares, concentration levels, competitive effects, entry conditions and transaction-related efficiencies.
• Advised clients in cartel investigations involving alleged price-fixing, market allocation, bid rigging, output restrictions and exchanges of competitively sensitive information.
• Represented companies in abuse of dominance investigations involving exclusivity arrangements, tying and bundling practices, discriminatory treatment, refusals to deal, predatory pricing and other potentially exclusionary conduct.
• Conducted competition law risk assessments in connection with strategic alliances, distribution arrangements and commercial collaborations, identifying regulatory risks and developing appropriate mitigation measures.
• Designed and implemented antitrust compliance programs, internal policies and training initiatives covering competitor interactions, sensitive information, trade association participation and distribution practices.
• Advised companies on dawn raid preparedness and response, including internal protocols, employee training, document preservation and management of authority requests.
• Assisted clients with internal competition law investigations involving potentially sensitive conduct, including the review of documents, communications and business practices, as well as the development of remediation strategies.