Argentina and the PCT: navigating the landscape while expecting accession

As the third-largest economy in Latin America, Argentina plays a strategic role in the region, combining a long tradition of scientific education with abundant natural and technological resources. The country produces highly qualified engineers, researchers, and entrepreneurs, and continues to generate innovation across sectors such as biotechnology, agritech, energy, software, and advanced manufacturing. In this context, it can be surprising to discover that Argentina remains outside several key international intellectual property treaties, including the Patent Cooperation Treaty (PCT).

The contrast between the country’s high innovation potential and its low level of integration into the global patent system has practical consequences for domestic and foreign applicants.

Argentina’s potential accession to the PCT has regained attention, as recent government initiatives signal momentum towards joining the international filing system. Historically, several countries have advocated for Argentina’s inclusion in the PCT, and ongoing negotiations for bilateral free trade agreements may further encourage it. While nothing has yet been formally ratified, these developments underscore a growing recognition within Argentina of the benefits of becoming a PCT contracting state.

The PCT was created to streamline and harmonise international patent application filings, giving applicants a unified process to seek protection in multiple jurisdictions. Today, more than 150 contracting states participate in the system, providing inventors with extended time to assess markets while securing an international search report and a patentability opinion. Despite widespread adoption globally, several Latin American countries, including Argentina, have yet to accede, thereby leaving gaps in regional patent strategy planning.

Since Argentina is not a PCT contracting state, applicants cannot enter a national phase directly. This limitation requires careful planning by foreign entities seeking patent protection in Argentina.

A common approach is to file an Argentine patent application in parallel with a PCT application by the 12-month deadline, using the PCT filing – or an earlier priority filing – as the basis for a Paris Convention priority claim in Argentina. Note that a PCT application that is the first-filed application can serve as the priority basis for subsequent filings in Argentina, because PCT applications are considered “regular national filings” in the sense of the Paris Convention. This also applies to other applications, such as those for European patent.

If a PCT application has been published by the time an Argentine application is filed, the published PCT application becomes prior art and can jeopardise patentability. In contrast, if the PCT application has not yet been published (typically within 18 months of the earliest filing date), an applicant may file directly in Argentina without a priority claim. This distinction is crucial, given that Argentina has no provisions for ‘secret prior art’; patent documents enter the prior art only upon publication.

As discussed in a previous article, a grace period is available in Argentina if the disclosure originated from the inventors, but this does not cover publications by patent offices, such as a PCT publication.

Applicants should be mindful that if they delay consideration of Argentina until close to the 30-month priority deadline under the PCT, it may already be too late to file locally, particularly if the international application has been published.

Because Argentina is not a PCT contracting state, local applicants often designate a ‘convenience co-applicant’ having nationality or residency in a PCT contracting state. Through this co-applicant, the application can be filed before the corresponding receiving office (RO) or before the International Bureau of the World Intellectual Property Organization, with assignments and ownership changes implemented later. Under PCT rules, an applicant can engage a local agent, who must be entitled to practise before the selected RO as a PCT agent.

While these mechanisms allow Argentine applicants to access the PCT system, they inevitably add procedural complexity. Issues relating to applicant identity, ownership structure, assignments, and compliance with nationality requirements must be carefully managed, often from the outset of the filing strategy.

In practice, applicants are required to file the international application outside Argentina and may need to rely on foreign agents, increasing administrative burden and costs. These factors place Argentine applicants at a structural disadvantage compared with applicants from PCT contracting states.

If Argentina joins the PCT, the benefits for domestic and international innovators would be significant.

For national applicants, the ability to file PCT applications directly through the Argentine patent and trademark office (PTO), in Spanish and under local procedural norms, would reduce translation costs and administrative complexity.

Filing through the national office would also increase predictability and coherence with domestic patent strategy, allowing applicants to secure international search reports and preliminary opinions early on. This early insight provides valuable visibility into the application’s prospects across jurisdictions in contexts where filing costs play a determining role.

The Argentine PTO would also benefit through enhanced examiner training, harmonisation of procedures, and increased integration with global patent systems. While the PCT allows national offices to maintain their own substantive patentability standards, participation in the system generally encourages procedural modernisation and shared best practices.

Foreign applicants would also profit from a more streamlined pathway to protection in Argentina. With PCT accession, applicants would no longer risk missing critical deadlines due to publication timing or priority issues. Translation-related costs could be deferred until national phase entry, and fewer procedural hurdles would likely exist to claim priority from earlier applications. Collectively, these improvements would increase legal certainty and reduce the administrative burden for innovators operating across multiple jurisdictions.

Argentina’s accession to the PCT would represent a meaningful leap forward for the country’s innovation ecosystem. It would reduce barriers for Argentine inventors and foreign patent applicants, fostering a more competitive and internationally aligned patent landscape. That said, the timing and formalisation of such accession remains uncertain, and stakeholders should monitor developments closely.

Given the complexity of cross-border patent strategy, particularly in regions with evolving treaty participation, seeking advice from experienced counsel with local expertise remains essential. A patent strategy tailored to Argentina’s legal framework can make the difference between successful protection and missed opportunities in a key market.