Mitrani, Caballero & Ruiz Moreno

What Mitrani, Caballero & Ruiz Moreno does

Mitrani, Caballero & Ruiz Moreno (legally MCO LEX S.R.L.) is a Buenos Aires-based, full-service business law firm founded in 2007. It advises large Argentine corporations, multinational companies entering or operating in Argentina, and financial institutions on corporate and M&A transactions, capital markets, tax, labor, intellectual property (with a particular emphasis on patents), energy, and regulatory compliance matters. The firm has been consecutively recognized by IAM Patent 1000 for patent practice and by Chambers and Partners as a leading regional firm, and it has executed high-value mandates including an 86 million euro cross-border acquisition by Tenaris and a 1.5 billion Argentine peso negotiable-obligations issuance for P.S. Anesthesia.

The firm operates a professional services model: revenue is generated through partner-led engagements billed on a fee-for-service basis, with no software product platform. Distribution is direct, enterprise-only, and relationship-driven — supported by a content-marketing channel (a website with regulatory alerts and case-study announcements), active participation in international legal conferences (IBA, ABA), and affiliation with the Pro Bono Commission of the Colegio de Abogados de la Ciudad de Buenos Aires. Customer segments split between large corporations/multinationals (M&A, cross-border, IP) and financial institutions (capital markets, debt issuance), with documented engagements spanning consumer goods (Molinos Río de la Plata), healthcare (P.S. Anesthesia), pharmaceuticals (Laboratorio LKM), energy/steel (Tenaris), and oil & gas (Explorador Capital-led consortium). The firm does not disclose revenue, headcount trends, or ownership structure, and there are no AI/ML capabilities, technology integrations, or subsidiary relationships identified in the available data.

Name

Mitrani, Caballero & Ruiz Moreno

Legal name

MCO LEX S.R.L.

Website

https://mcolex.com

Company type

Private

Founded year

2007

Operating status

Operating

Headcount range

101–250 employees

Short description

Mitrani, Caballero & Ruiz Moreno is a Buenos Aires-based, full-service business law firm advising large corporations, multinationals, and financial institutions on M&A, capital markets, tax, labor, intellectual property, and regulatory matters across Argentina and cross-border Latin American deals.

Ownership category

akta.pro rank

Product category

Legal Advisory Services

NAICS

Offices of Lawyers (541110), Legal Services (5411)

SIC

Services-Legal Services (8111)

akta.pro primary industry

Corporate & Commercial Law (BPAHAAAA)

akta.pro secondary industries

M&A Advisory (Buy-Side & Sell-Side) (BPAHAOAA), Corporate Development & Strategic Partnerships Advisory (JVs, Alliances, Carve-outs) (BPAHAOAG), Risk, Compliance & Internal Controls Consulting (BPAHACAJ), Cross-Border M&A Advisory (FSAEAGAH)

Keywords

• Corporate legal advisory
• Mergers and acquisitions
• Capital markets law
• Intellectual property law
• Tax advisory services

Headquarters

HQ city

Buenos Aires

HQ country

Argentina

HQ region

Latin America

Offices1 record

Markets served

GTM type

B2B

Offering type

Services

Cost components

Personnel, Operations, Marketing or Sales, Technology or R&D, Infrastructure

Revenue model

1. Legal Advisory Services: The firm generates revenue through professional legal services including M&A advisory, capital markets transactions, corporate restructuring, intellectual property, labor law, tax advisory, and regulatory compliance services. Revenue is primarily project-based and engagement-specific, billed on a fee-for-service basis for complex transactions and ongoing advisory mandates.

Go-to-market motion1 record

Distribution channels1 record

Marketing channels3 records

Core offering

Mitrani, Caballero & Ruiz Moreno is a full-service business law firm based in Buenos Aires, Argentina, providing legal advisory services across corporate and M&A transactions, capital markets, tax law, labor law, intellectual property (particularly patents), regulatory compliance, and energy sectors. The firm advises enterprise clients on complex domestic and cross-border transactions, including high-value M&A, negotiable obligations issuances, and international acquisitions involving Argentine targets. Services are delivered by partner-led attorney teams on an engagement-by-engagement basis.

Product overview

Mitrani, Caballero & Ruiz Moreno (also operating as Mitrani Caballero) is a full-service law firm based in Buenos Aires, Argentina. The firm provides legal advisory services across multiple practice areas including corporate and M&A transactions, capital markets, tax law, labor law, intellectual property (particularly patents), and regulatory compliance. Rather than offering a software product platform, the firm delivers professional legal services through its team of attorneys, with a focus on serving corporate clients in domestic and cross-border transactions.

Differentiator

Problem solved

Functional benefit

Products and services

• Corporate and M&A Advisory Legal advisory for mergers and acquisitions, corporate restructurings, and corporate governance matters for large corporations, multinationals, and international investors with interests in Argentina and Latin America.
• Capital Markets Legal advisory for securities offerings, negotiable obligations issuances, and capital markets transactions in Argentina, including regulatory compliance with CNV (Comisión Nacional de Valores) and supporting organizers, placement agents, and issuers.
• Tax Advisory Tax planning and advisory services for international and domestic transactions, including cross-border tax structuring, application of tax treaty benefits, and tax residence accreditation, with representation at international tax conferences such as the IBA/ABA Annual U.S. and Latin America Tax Practice Trends Conference.
• Labor Law Advisory on Argentine labor law matters, including navigation of the Ley de Modernización Laboral, the Régimen de Incentivo a la Formalización Laboral (RIFL), and collective bargaining aspects.
• Intellectual Property Patent prosecution and IP protection services, with particular focus on biotechnology patenting and recognized globally by IAM Patent 1000 as a leading IP practice.
• Regulatory Compliance Advisory on Argentine regulatory frameworks including CNV capital markets regulations (PLA/FT/FP regime, Big Bang regulatorio), IGJ foreign-entity regime modifications, and Súper RIGI large investment incentive regime.
• Energy and Natural Resources Legal advisory for energy and oil & gas sector transactions, including strategic alliances and acquisitions of hydrocarbon concessions in Argentina by international investor consortia.
• Pro Bono Legal Services Free legal services delivered through the Pro Bono Commission of the Colegio de Abogados de la Ciudad de Buenos Aires, a network of over 3,000 professionals strengthening access to justice.

Quantifiable outcome

• Advised on 86 million euro acquisition of Romania's leading seamless steel tube manufacturer
• +2 more outcomes

Named customers5 records

Segments2 records

Ideal customer profiles2 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Partnerships

One partnership is on record.

• Comisión Pro Bono del Colegio de Abogados de la Ciudad de Buenos AirescoreOthers · 1 January 2026Mitrani Caballero maintains an active commitment to the Pro Bono Commission of the Buenos Aires City Bar Association. The firm participates in initiatives that strengthen access to justice for those most in need. The Commission is a network of over 3,000 professionals offering free legal services.

Scale indicators2 records

Recent moves6 records

Expansion highlights5 records

Direct peers

• Bruchou, Fernández Madero & Lombardi: Leading Buenos Aires-based corporate and finance firm with deep capital markets, M&A, and banking practice. Comparable to Mitrani Caballero for large debt issuances, IPOs, and cross-border deals involving Argentine targets, and a frequent co-counsel/competitor on Latin American transactions.
• Estudio Beccar Varela: Buenos Aires-headquartered full-service firm focused on M&A, corporate, and private clients. Comparable in size and practice breadth to Mitrani Caballero, also serving large local corporates and multinational investors entering the Argentine market.
• Nicholson y Cano Abogados: Mid-sized full-service Buenos Aires firm with notable practices in corporate/M&A, banking, and tax. Comparable in size and service breadth to Mitrani Caballero, and actively competes for similar enterprise and financial institution mandates.
• Allende & Brea: Long-standing full-service Buenos Aires firm with strong corporate/M&A and administrative law practices. Comparable peer serving the same multinational and large Argentine corporate clients on similar cross-border mandates and regularly appearing alongside Mitrani Caballero in regional legal rankings.
• Marval O'Farrell Mairal: Argentina's largest full-service law firm headquartered in Buenos Aires, also consistently top-ranked by Chambers and Partners across corporate, M&A, banking, and capital markets. Closely comparable to Mitrani Caballero in client base (multinationals, financial institutions) and cross-border M&A / capital markets practice, and the most direct head-to-head competitor in the Argentine market.
• Bomchil: Buenos Aires-based full-service firm historically strongest in M&A, energy, and capital markets. Comparable Argentine peer handling cross-border deals and capital markets mandates for similar enterprise clients in consumer goods, energy, and financial services.
• Pérez Alati, Grondona, Benites, Arntsen & Martínez de Hoz (PZP): Argentina-focused corporate and finance firm with recognized strength in M&A, capital markets, banking, and restructuring. Comparable peer practicing in the same Buenos Aires market against the same enterprise and financial institution clients.

Regional players

• Philippi Prietocarrizosa Ferrero DU & Uría: Major Latin American regional firm with offices across several LatAm jurisdictions and a recognized corporate/M&A practice. Comparable as a Latin America-focused advisor on multi-country deals (including the Chile–Argentina–Uruguay corridor relevant to clients like Molinos/NotCo), though not headquartered in Argentina.

Broad incumbents

• Baker McKenzie (Argentina): Global Magic Circle firm with a substantial Buenos Aires office serving cross-border M&A and capital markets clients in Argentina. Comparable on the cross-border dimension but with vastly broader geographic footprint and larger headline scale; competes with Mitrani Caballero for international client mandates.
• Cleary Gottlieb Steen & Hamilton (Buenos Aires): Premier US-led international firm with a longstanding Buenos Aires office advising on the largest Argentine M&A, securities, and sovereign transactions. Competes with Mitrani Caballero on premium cross-border mandates where international brand and US law capability matter, but is much broader and larger.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat4 records

Key risks6 records

Key highlights7 records

Customer concentration

• Xx.com/EstudioMitrani
• Facebookfacebook.com/EstudioMitrani

Revenue estimate

Valuation estimate

Number of profiles

Profiles2 records

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about Mitrani, Caballero & Ruiz Moreno