International and Transnational Law

LegalCounselWithout Borders

Legal strategies designed for an interconnected world. Clear guidance for international growth and dispute resolution.

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The Firm

Jarsun, Ferreira & Calvo is a law firm based in Buenos Aires. We advise companies, founders, and venture capital funds on cross-border transactions and represent them in international arbitration and litigation. The firm has attorneys admitted in both Argentina and New York, and with experience in proceedings before ICSID and other institutions under multilateral organizations.

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Insights

News & Updates

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Vicuña Case: A La Rioja Judge Suspends a Mining Project in San Juan and Raises Questions on Legal Certainty for Mining Investments
Argentina IGJ Resolution 1/2026: Declarative Registration of Corporate Officers and Sworn Bond for Directors
Argentina's FIU Resolution 37/2026: Mandatory Digital Registration for AML Obligated Entities
Lara Jarsun Coached at the Philip C. Jessup International Law Moot Court Competition in New Delhi
Money Transmission in the United States: Licenses, Requirements, Exemptions and Alternatives for Payment Companies and Fintech
Labor Modernization Law (No. 27,802): Analysis of the Reform to Argentina's Employment Contract Regime, Severance, Working Hours and Labor Registration

Vicuña Case: A La Rioja Judge Suspends a Mining Project in San Juan and Raises Questions on Legal Certainty for Mining Investments

A Chilecito judge ordered the suspension of the Vicuña Project through a self-executing measure based on the precautionary principle. Analysis of the impact on predictability of Argentina's mining investment regime.

What We Do

Practice Areas

Comprehensive legal services tailored to the demands of an interconnected global economy.

Our Approach

Why Do Companies Choose Us?

Investment
Arbitration Experience

Members of our team have represented states and investors in arbitrations under ICSID and UNCITRAL rules, in cases under bilateral investment treaties across Latin America, Europe, and the United States.

Practical
Advice

We structure our advice around what the client needs to resolve. Each matter has a defined scope, a timeline, and a clear deliverable.

Direct Partner
Involvement

Partners handle the work directly. Clients deal with the same attorneys from start to finish on every matter.

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Your Legal Needs

We offer initial consultations to understand the scope of your matter and determine how our expertise can best serve your interests. Reach out — we respond within 24 hours.

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