Mr Diego Sierra > Von Wobeser y Sierra, SC > Mexico City, Mexico > Lawyer Profile

Von Wobeser y Sierra, SC
Diego Sierra photo

Work Department

Von Wobeser and Sierra


Partner Diego Sierra is engaged in the following practice areas: Anti-Corruption & Compliance,Civil & Commercial Litigation, Commercial Arbitration, Constitutional Amparo & Administrative Proceedings, Energy & Natural Resources, Oil & Gas, Public-Works Arbitration.


Foreign attorney, Skadden, Arps, Slate, Meagher & Flom LLP, New York, (2011-2012). Admitted to practice in Mexico and New York. Anticorruption Committee of the International Chamber of Commerce (ICC). Co-Coordinator, Bankruptcy Law Commission of the Mexican Bar Association (BMA). President of the Student Counsel, Escuela Libre de Derecho (ELD) (2006-2007). Adjunct Professor of Constitutional and Administrative Law, Universidad Iberoamericana (UIA) (2008-2009). Adjunct Professor of Roman Law, Escuela Libre de Derecho (ELD) (2009-2010).


Spanish and English (Intermediate French and Italian).


International Bar Association (IBA).
Mexican Bar Association (BMA).
International Chamber of Commerce (ICC).


He obtained his Law Degree (J.D. equivalent) with honors, Escuela Libre de Derecho (ELD), Mexico City, 2007. Diploma in International Arbitration, first in his class, Escuela Libre de Derecho (ELD), Mexico City, 2007. He obtained his Master of Laws Degree (LL.M.) and Certificate in Business Administration with honors, Northwestern University School of Law & Kellogg School of Management in Chicago, 2011.

Lawyer Rankings

Mexico > Compliance

(Leading individuals)

Diego SierraVon Wobeser y Sierra, SC

For some, Von Wobeser y Sierra, SC was ‘one of the first Mexican law firms to have ventured into the area of ​​anti-corruption and compliance, being one of the most recognized firms in this matter’. Certainly, dual-qualified (Mexico/New York) practice head Diego Sierra is regarded as a ‘pioneer’ in the field. Currently chair of Transparency International and Mexicanos Contra la Corrupción y la Impunidad, as well as head of the legal group of MéXXIco Libre de Corrupción, Sierra focuses on risk assessment and high-profile white-collar cases in Mexico, and also handles a variety of Foreign Corrupt Practices Act (FCPA) related matters. Indeed, the firm is frequently the co-counsel of choice for US firms undertaking international investigations in Mexico. The team has experience across the anti-corruption, AML and digital and data security areas, with recent mandates including advising BHP Billiton on anti-corruption matters and a review of Teleflex’s clients’ code of conduct regarding anti-corruption regulations; as well as issues arising from interaction with public officials and self-reporting. Key support comes from ‘phenomenal‘ counsel (as of January 2021), Pablo Fautsch, who has experience in both compliance and investigations.

Mexico > Bankruptcy and restructuring

Regarded by some clients as a ‘reference firm’, Von Wobeser y Sierra, SC has a seven-strong ‘diverse team with extensive knowledge’, and is recognized for its expertise in domestic and cross-border bankruptcy litigation, as well as out-of-court restructurings. Acting for debtors and lenders, the team is led by partner Diego Sierra, a ‘very thorough lawyer’ with ‘excellent legal knowledge and experience’, who also heads the firm’s anti-corruption and compliance practices, and remains active in arbitration and complex commercial litigation.

Mexico > Dispute resolution: litigation

Best known in dispute circles for its top-flight arbitral capability, Von Wobeser y Sierra, SC also houses considerable litigation fire-power, its 25-strong team including being deeply experienced across commercial, civil and administrative litigation. Adrián Magallanes and Diego Sierra co-lead the group; commercial litigation specialist Sierra also heads the firm’s anti-corruption practice. The department, which is regularly mandated in disputes against the government, as well as state-linked agencies and companies such as Pemex, was further reinforced in January 2020 with the incorporation of former Chief of The Supreme Court of Justice Guillermo Ortiz Mayagoitia, a specialist in administrative, agrarian, civil, commercial, constitutional and tax procedural law, as of counsel. The practice also handles mediation, constitutional amparos and class-action litigation. Indeed, the team has been particularly active in this last segment where it is currently advising BMW (as a co-defendant) in a case regarding airbags; Syngenta Agro as a co-defendant in a case concerning genetically modified maize; and Volaris in a case brought by the Federal Consumer Agency. Other matters include multimillion-dollar litigation concerning the interpretation and termination of a supply agreement, the interpretation and performance of joint venture; the potential lack of validity of a trust agreement, and the existence of a real estate easement in northern Mexico allowing the development of a gas pipeline. Since publication, senior associate Raymundo Soberanis has been appointed partner, while fellow former-seniors Jessika Rocha  (in Monterrey) and Pablo Fautsch have been raised to counsel (all promotions effective as of January 2021).