Argentina’s PCT accession timeline is still open: the Chamber of Deputies approved accession on 27 August 2026 with a Chapter II reservation, the amended text must go back to the Senate, and at the start of October no Senate vote had taken place. Until Argentina deposits its instrument with WIPO and three months pass, the only way to protect an invention there is a direct national filing within 12 months of priority. This guide explains which applications need to go to Argentina directly now and how to prepare a filing strategy that works under either scenario.
Key takeaways
- Even after a Senate vote, the PCT will bind Argentina only three months after the instrument of accession is deposited with WIPO (PCT Article 63(2)).
- A PCT application designates only the states bound on its international filing date (PCT Rule 4.9(a)): Argentina cannot be added later to applications filed before entry into force.
- For every invention whose priority year ends before that date, the direct route under the Paris Convention, within one year of priority, remains the only option.
- Argentine law requires the priority claim at filing, and its regulations give three months to file the priority document, the assignment and their translations.
- The Chapter II reservation means no international preliminary examination for Argentina, but Argentina already lets applicants rely on foreign search and examination results at any stage before a decision.
Where does Argentina’s PCT accession stand?
Argentina signed the PCT in 1970 and the Senate approved accession in 1998, but the process stalled in the lower house for almost three decades. The table sets out what has happened and what is still pending.
| Step | Status at the start of October 2026 | Source |
|---|---|---|
| Signature and first Senate approval | 1970 and 1998 | EU IP Helpdesk, 1 September 2026 |
| Chamber of Deputies | Approved in the early hours of 27 August 2026, 147 votes to 93, with a reservation on Chapter II | Perfil, 27 August 2026; Marval O’Farrell Mairal, 26 August 2026 |
| Senate | Must approve the amended text; no vote reported so far | EU IP Helpdesk, 1 September 2026 |
| Deposit with WIPO | Pending; follows completion of the domestic procedure | PCT Article 63(2) |
| Entry into force for Argentina | Three months after deposit | PCT Article 63(2) |
The European Commission’s IP Helpdesk noted on 1 September that the bill has to go back to the Senate for another vote before accession can be completed. Perfil linked the vote to Argentina’s trade agreement with the United States, which includes modernising patent protection. Political timing is therefore uncertain, and no filing decision should depend on a forecast of when the Senate will act.
What is the earliest Argentina could be designated in a PCT application?
Under PCT Article 63(2), a state that joins after the Treaty’s entry into force becomes bound three months after depositing its instrument of accession. Before deposit, the Senate must approve the amended text and the law must complete its domestic procedure. Each step takes time, so even a rapid Senate vote would leave Argentina outside the PCT for at least several more months.
The decisive rule for applicants is PCT Rule 4.9(a): filing a PCT request designates all contracting states bound by the Treaty on the international filing date. There is no mechanism to add a state that joins later. A PCT application filed today will never cover Argentina, whatever happens in the Senate next month.
Which applications must be filed directly in Argentina now?
The practical question is not when Argentina will join, but which of your inventions will reach the end of their priority year before it does. This decision table covers the usual situations:
| Your situation | What to do for Argentina | Why |
|---|---|---|
| Priority application filed in the last 12 months; PCT planned or already filed | File a national application in Argentina before the priority year ends | The PCT application will not designate Argentina, and priority is only recognised within one year of the first filing (Article 13, Law 24.481) |
| PCT application already filed; priority year closed | Argentina is no longer reachable with priority for that invention; review any later improvements that could still be filed | No retroactive designation under Rule 4.9(a) |
| New inventions to be filed in the coming months | Plan a direct Argentine filing at month 12 and budget for it now | Entry into force is unlikely before their international filing date; revisit only once the deposit date is known |
| Inventions to be filed after the deposit date is published | Count the three months from deposit and compare them with your planned international filing date | Only applications filed on or after entry into force designate Argentina |
Once the deposit is announced, the calculation becomes mechanical. Until then, a direct filing is the only safe assumption for Argentina.
How to prepare a direct filing in Argentina
A national filing at Argentina’s National Institute of Industrial Property (INPI) under Law 24.481 and its regulations has its own requirements, and most problems arise at month 12, when time is short:
- Claim priority at filing. Article 14 of the law requires the priority right to be invoked when the application is filed.
- Diarise three months. For filings under the Paris Convention, Article 57 of the regulations gives three months from filing to submit the priority document and, where applicable, the assignment of the priority right, with translations into Spanish. Missing that deadline loses the priority.
- Check ownership. If the Argentine applicant is not the applicant of the first filing, the assignment of the priority right must exist and be filed.
- Do not broaden the claims. The Argentine application cannot have a wider scope than the foreign one; if it does, priority is only partial (Article 14(2)).
- Use foreign results. Resolution P-056/2016 lets applicants rely on the search and examination of an equivalent foreign patent; since Resolution 142/2026, published on 13 May 2026, this can be requested at any stage before the final decision.
What this means for your business
- List every family whose priority year ends in the next twelve months and mark those where Argentina matters commercially.
- For those families, plan the Argentine filing and its Spanish translation at month 12, not at month 30.
- In licensing or M&A due diligence in Latin America, check how Argentine rights were obtained: priority claimed at filing, priority documents filed within three months and claims aligned with the priority.
- Keep the Senate vote and the WIPO deposit on your watch list; the three-month clock only starts with the deposit.
If your portfolio covers Argentina alongside Brazil, Mexico and the Andean countries, our patent filing team for Europe and Latin America can build the month-12 and month-30 plan family by family. For transactions, the same review fits into a cross-border IP due diligence in Latin America.
Where companies get this wrong
- Waiting for the Senate. Letting the Argentine priority deadline pass in the hope that the PCT will cover it later loses the country for that invention.
- Assuming late designation is possible. Rule 4.9(a) fixes the designated states on the international filing date.
- Filing at the last minute without the documents. The three months to file the priority document, assignment and translations run quickly when the local agent is instructed late.
- Splitting the strategy between advisers. When the European filing, the PCT and the Argentine national filing are handled by unconnected firms, claim sets drift apart and the priority can become only partial.
Frequently asked questions
When will Argentina join the PCT?
There is no date yet. The Chamber of Deputies approved accession on 27 August 2026 with a Chapter II reservation, so the Senate must approve the amended text. After that, Argentina must deposit its instrument with WIPO, and the Treaty will bind Argentina three months after the deposit under PCT Article 63(2).
Can I designate Argentina in a PCT application I file now?
No. Under PCT Rule 4.9(a), a PCT request designates only the states bound by the Treaty on the international filing date, and Argentina is not yet one of them. Applications filed before entry into force will not cover Argentina later, so a direct national filing within the priority year is needed.
What does the Chapter II reservation change for foreign applicants?
Once accession is in force, applicants will not be able to elect Argentina for international preliminary examination, but national phase entry at 30 months from priority will still be available. In practice, the Argentine office will carry out its own full examination, and applicants can still rely on foreign results under Resolution P-056/2016.
Can IP Global Guard file in Argentina for my company?
Yes. We review your families, identify those that need a direct Argentine filing before the priority deadline and coordinate qualified local correspondents at the INPI, including priority documents, assignments and translations. You keep one point of contact for Argentina and the rest of your European and Latin American portfolio.
How IP Global Guard can help with Argentina
IP Global Guard, the intellectual property services line of META Channel Corporation Limited, coordinates patent filings across more than 25 jurisdictions in Europe, Latin America and Africa with one strategy and one billing relationship. We track Argentina’s accession, plan your month-12 and month-30 decisions and instruct local correspondents so that no priority is lost while the Senate decides. See our coverage across the corridor.
Send us the list of inventions with priority dates in the next twelve months and tell us where Argentina fits in your plans. We will tell you which ones need a direct filing and what it involves. Talk to our patent team about Argentina.
This article is general information, not legal advice, and reflects the legislative position known at its publication date.
Sources
- European Commission IP Helpdesk, Argentina moves closer to joining the Patent Cooperation Treaty (1 September 2026)
- Marval O’Farrell Mairal, Argentina: PCT approved by the House of Representatives (26 August 2026)
- Perfil, Diputados aprobó el Tratado de Patentes y el proyecto vuelve al Senado (27 August 2026)
- WIPO, Patent Cooperation Treaty, Article 63
- WIPO, PCT Regulations, Rule 4
- Argentina.gob.ar, Law 24.481 on patents and utility models and its regulations (consolidated text)
- Boletín Oficial de la República Argentina, INPI Resolution 142/2026 (13 May 2026)
