Patricio Martínez Osorio


Patricio Martínez Osorio



As counsel, Patricio leads the firm’s merger control front in the Antitrust and Competition practice area. He has over 16 years of experience advising and representing domestic and foreign companies, with special focus on regulatory matters, obtaining approvals in complex pre-merger filings before the Mexican Antitrust Commission (COFECE), among others.

The industries in which Patricio has obtained pre-merger clearances include agrochemicals, hospitality and timeshares, supermarkets, carbonated beverages, bottled water, services and processes in the oil and gas industries, pharmaceuticals, entertainment, textiles, valves, controls, and compressors. He also advises companies in investigations involving cartel behaviour and abuse of dominance cases.

Patricio also advises companies in corporate and commercial law matters. His international experience includes working as foreign associate at the New York office of Shearman & Sterling between 2011 and 2012.


  • Obtained antitrust clearance in a merger of equals involving two competing companies in the agrochemicals, specialized products, and material sciences markets
  • Advised one of the largest hotel chains in the world in its acquisition by a competitor
  • Obtained antitrust clearance for an American supermarket chain in the acquisition of a minority stake in a competing nation-wide supermarket
  • Advised a carbonated beverage bottling company in the sale of its business to a competitor, including the authorization from the antitrust regulator without remedies
  • Obtained antitrust clearance for the merger of two publishing companies in the sciences and education field
  • Advised a shipping company in an investigation for alleged cartel behaviour
  • Advised a group of service-based companies in the oil industry in two merger transactions, including the corresponding authorizations from the antitrust regulator
  • Advised a global food and beverage company to obtain the corresponding authorizations to acquire control of a joint venture in the market for bottled water
  • Advised a global food and beverage company in an investigation of possible abuse of dominance in the market involving advertisement and marketing spaces
  • Advised a group of advertisement agencies in an investigation of possible abuse of dominance in the market involving advertisement and marketing agencies

Areas of Practice

Awards & Recognitions

  • Competition/Antitrust ranked Up and Coming lawyer, Chambers and Partners
  • Global Leader in Competition, Who’s Who Legal
  • National Leader Mexico in Competition, Who’s Who Legal
  • Competition / Antitrust recognized lawyer, Best Lawyers


  • Master of Laws (LL.M.) with merit, in Competition Law, King’s College London.
  • Law degree (J.D. equivalent) with highest honors, Universidad Iberoamericana, Mexico.


  • Professor at the School of Law of the Universidad Anáhuac, Mexico City, Mexico (2018-2020)
  • Former professor of the Introduction to Legal Studies course at the Irish Institute, Mexico City, Mexico (2005-2008)


  • American Bar Association (ABA)

Publications & Collaborations

  • Article: "Mexico breaks up bus cartel" published by Global Competition Review. Read more
  • Article: “Fan ID and video surveillance in soccer stadiums”, coauthor, published by Industrial Legal, May 2022 Read more
  • Article: "The horizon for personal data regulation in Mexico", coauthor, published by Revista Industrial Legal, March 2022 Read more
  • Article “Overview of Mexican Real Estate Investments”, co-author, published in PLC Cross-border Corporate Real Estate Handbook 2008/09
  • Article “Overcoming the constitutional difficulties: Recent Trends in Mexican Competition Law”, co-author, published by Latin Lawyer, July 2006
  • Article “A tougher sheriff”, co-author, published by the International Financial Law Review, December 2006
Spanish – English
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