International and Transnational Law

International law for cross-border business and disputes

From Buenos Aires, we advise companies, founders and funds operating across Argentina, the United States and other markets. We combine fintech regulation, venture finance, international contracts and representation in complex arbitrations and litigation.

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The Firm

Based in Buenos Aires, Jarsun, Ferreira & Calvo advises companies, founders and venture capital funds on cross-border transactions, international disputes and regulated growth. Our team includes attorneys admitted in Argentina and New York, with experience in ICSID proceedings and other leading international forums.

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Buenos AiresArgentina + New YorkICSID / UNCITRALFintechVCDisputes
What We Do

Practice Areas

Fintech regulation, venture finance, international contracts and dispute resolution for companies and investors operating across Argentina, the United States and Latin America.

Fintech & Financial Regulation

We advise fintech companies, regulated financial institutions and technology platforms on the design, structuring and scaling of regulated financial products and payment infrastructures across the United States and Latin America.

  • PSP/BCRA
  • PSAV/CNV
  • Cross-border payments

Venture Finance & Startups

We provide sophisticated transactional and structuring counsel to venture-backed companies and institutional investors across the full financing lifecycle — from seed rounds to growth-stage transactions and exit structuring.

  • Financing rounds
  • Cap tables
  • VC funds

International Litigation

We advise and represent companies, investors and individuals in complex disputes arising from cross-border contracts, transnational investments and international business operations.

  • Multijurisdictional disputes
  • Procedural strategy
  • Enforcement

Commercial Arbitration

We represent companies, investors and state-owned entities in complex domestic and international commercial arbitrations conducted under leading institutional and ad hoc rules.

  • ICC
  • UNCITRAL
  • International contracts

Investment Arbitration

We represent sovereign States, state-owned entities, and foreign investors in investment arbitrations arising under bilateral investment treaties, free trade agreements and investment contracts.

  • ICSID
  • Bilateral treaties
  • States and investors

Contractual Architecture

We provide sophisticated drafting, negotiation and lifecycle management of commercial, technology and consumer-facing agreements for companies operating across multiple jurisdictions.

  • SaaS
  • B2B contracts
  • Data protection
Our approach

Why clients choose us

Argentina + New York
at the same table

We advise on matters that cross Argentine law, U.S. law and international structures, without separating local strategy from cross-border execution.

Regulation, contracts
and disputes connected

We combine experience in fintech, venture finance, international contracts, arbitration and litigation to anticipate risk from initial structuring through dispute resolution.

Direct partner
involvement

Matters are led by partners from start to finish. Clients work with senior lawyers who know the file, the strategy and the commercial context.

Insights

Analysis and updates

View all
The IGJ streamlines the registration regime for foreign companies in Argentina: GR 4/2026 repeals 29 articles, unifies the regimes under arts. 118 and 123 of the GCA
Argentina's CNV Regulatory Big Bang: automatic authorization for shares, negotiable obligations, trusts and mutual funds
Tokenization in Argentina: CNV expands the regime and extends the sandbox through 2027
Argentina's new framework for vaping and nicotine products
Argentina Decree 315/2026: Government Implements the Labor Formalization Incentive Regime (RIFL) Under Law 27,802
Vicuña Case: A La Rioja Judge Suspends a Mining Project in San Juan and Raises Questions on Legal Certainty for Mining Investments

The IGJ streamlines the registration regime for foreign companies in Argentina: GR 4/2026 repeals 29 articles, unifies the regimes under arts. 118 and 123 of the GCA

The IGJ repeals 29 articles, unifies the requirements of arts. 118 and 123 of the Companies Act, enables joint processing with local entity incorporation, and streamlines statutory amendment filings for multi-jurisdictional holdings.

Contact

Let's discuss your
cross-border matter

Tell us briefly about the context. A partner will review the matter and respond within 24 hours.

Contact the firm