Ernesto Duhne > Santamarina y Steta > Mexico City, Mexico > Lawyer Profile

Santamarina y Steta
11560 MEXICO, D.F.
Ernesto Duhne photo

Work Department

International Trade and Antidumping, Competition and Antitrust, Franchises and Licensing, Mergers, Acquisitions and Joint Ventures




Ernesto has 25+ years of experience successfully advising national and international clients in economic competition, international trade, mergers, acquisitions and joint ventures. He has represented clients during antitrust investigations conducted by the Federal Commission for Economic Competition (COFECE), where he has led numerous mergers and acquisitions for the manufacturing, automobile, auto part, hospitality, chemical, mining, heavy manufacturing and financial services industries, among others.

Ernesto represents clients in international trade procedures, including advising them on alternatives for structuring commercial operations of foreign companies in Mexico, as well as with regards to different programs for the promotion of exports, such as the IMMEX program, the Special Fiscal Zone, among others.


Spanish, English


1989, Universidad Nacional Autónoma de México, México

Lawyer Rankings

Mexico > International trade and customs

Two experienced partners, Alejandro Luna and Ernesto Duhne, lead the eight-strong trade team at full-service firm Santamarina y Steta, which shows notable skills handling a range of IT&C matters, especially structuring operations in line with customs obligations, FTAs, IMMEX (maquiladora), tariff and non-tariff matters, taxation, anti-dumping, verification of origin, and related disputes. The practice has earned a good standing among multinational companies in the automotive, health, technology, aerospace, marine, pharmaceutical, retail and agro-industrial sectors, and also includes  noteworthy practitioners Mariano Calderón, a tax specialist who handles customs litigation, and associate Michel Zelaya.

Mexico > Competition and antitrust

Comprising a group of ‘excellent lawyers’, the practice at Santamarina y Steta has extensive experience advising clients on merger authorizations and antitrust investigations, regularly representing clients in confrontations with the regulators, including claims of anti-competitive behavior, cartel investigations and dawn raids (for which the firm provides regular training). The practice group includes the ‘outstandingErnesto Duhne, along with fellow co-heads Vicente Grau and skilled litigator Mariano Calderón; in accordance with the firm’s strong transactional practice, the group is particularly active in M&A clearance matters. A strong second line includes senior associate Jair Vaca, along with associates Bárbara Asiain and Yakov Kobets.