PCT National Phase Entry in Chile: Deadlines, Requirements, and What Your Legal Team Needs to Know
If your company or client holds a PCT international patent application and Chile is on the list of target jurisdictions, the clock is ticking.
The national phase entry deadline in Chile is 30 months from the earliest priority date, and missing it can mean permanently losing the right to patent protection in one of Latin America's most important markets.
This guide walks through the full process of entering the national phase in Chile, from document requirements and translation rules to examination timelines and maintenance fees.
Whether you are an in-house IP counsel, a patent attorney managing a global portfolio, or a law firm coordinating filings across Latin America, this is the practical overview you need to get it right.
Why Chile Matters for Patent Protection
Chile has built a reputation as one of the most stable and transparent IP environments in Latin America. The country is a member of the PCT (the treaty entered into force in Chile on June 2, 2009), and its patent office, INAPI (Instituto Nacional de Propiedad Industrial), follows well-established procedures that align with international standards.
For companies in technology, pharmaceuticals, mining, agriculture, and renewable energy, Chile represents both a direct market opportunity and a strategic gateway to the broader region.
Patents granted in Chile are territorial, meaning they only provide protection within Chilean borders, but the country's strong enforcement framework makes that protection meaningful.
Chile also participates in the Patent Prosecution Highway (PPH) with the USPTO, which can significantly accelerate examination if you already have allowed claims in the United States. More on that below.
The 30-Month Deadline
The deadline for entering the national phase in Chile is 30 months from the earliest priority date of the PCT application. This is a hard deadline. If you miss it, INAPI will treat the application as withdrawn in Chile.
There is a narrow reinstatement option. If the missed deadline was not intentional and occurred despite due diligence, the applicant can file a request for reinstatement of rights.
This request must be submitted within two months after the cause for non-compliance ceases, or within 12 months after the expiration of the 30-month term, whichever comes first.
But reinstatement is not guaranteed, and the burden of proof is on the applicant. The safest approach is to treat the 30-month deadline as absolute.
If you are coordinating national phase entries across multiple Latin American countries, keep in mind that deadlines vary. Colombia, Costa Rica, and Ecuador allow 31 months, while Brazil and Peru also follow the 30-month rule. Argentina is not a PCT member, so the Paris Convention's 12-month priority deadline applies there instead.
Documents Required for National Phase Entry
To enter the national phase in Chile, you will need to submit the following:
Spanish translation of the PCT application
This includes the description, claims, abstract, and title. If the international application was filed in a language other than Spanish, the translation must be submitted within 30 days of the national phase entry date.
INAPI does not require a certified or notarized translation for this purpose. A precise and consistent translation is sufficient.
Power of Attorney
Foreign applicants must be represented by a registered Chilean patent attorney. The original power of attorney must be submitted, though INAPI allows a grace period of 60 days from the date of national phase entry to provide it.
Assignment of Rights
If the applicant is not the inventor, a notarized assignment deed must be filed within 30 days of entering the national phase.
Modified texts under Articles 19 or 34 of the PCT
If amendments were submitted during the international phase, Spanish translations of those modified texts must also be provided.
Sequence listing (if applicable)
For biotech-related applications, an editable version (.txt) of the sequence listing is required.
International Preliminary Report on Patentability (IPRP)
If available, this should be submitted along with the other documents.
Getting these documents right from the start matters. Missing or incomplete filings will trigger office actions from INAPI, delaying prosecution and adding cost.
The Prosecution Timeline
Once the application enters the national phase, the process follows a defined sequence:
Preliminary Examination
INAPI reviews the application for formal compliance. If any documents are missing or incomplete, the office will issue a notification requesting corrections. This step typically takes a few weeks.
Publication
After the preliminary examination is cleared, the applicant must request publication of the application in the Official Gazette (Diario Oficial). This needs to happen within 18 months of the filing date. Publication triggers a 45-working-day opposition period, during which third parties can challenge the application.
Request for Substantive Examination
The applicant must request examination within 60 working days after the opposition period expires. This is a separate, active step. If you do not request examination within this window, the application can be deemed abandoned.
Examination
Once the examination fee is paid, INAPI appoints a technical examiner. The examiner has 60 days to issue a first office action. The applicant then has 60 days to respond, with the option to request a single extension. The examination evaluates novelty, inventive step, and industrial applicability under Chilean patent law.
Grant
If the application meets all patentability requirements, INAPI issues a resolution granting the patent. The applicant then has 60 working days to pay the grant fee and maintenance fees for the first decade of protection.
From national phase entry to grant, the process typically takes 3 to 5 years if there are no oppositions or significant complications. Complex cases involving multiple office actions, oppositions, or appeals can take longer.
Maintenance Fees: A Simpler System
One thing that catches many foreign practitioners off guard (in a good way) is that Chile does not use a traditional annual annuity system for patents. Instead, maintenance fees are structured in two lump payments:
First payment: covers the first 10 years of protection. This is due within 60 working days of the grant date.
Second payment: covers the remaining 10 years (years 11 through 20). This is due on the 10th anniversary of the filing date.
If the second payment is missed, there is a six-month grace period with surcharges. After that, the patent lapses. No annuities are due during the pendency of the application, which keeps costs predictable during prosecution.
The Patent Prosecution Highway (PPH) With the USPTO
Chile and the United States have had a PPH pilot program in place since October 2018. If the USPTO has issued a favorable ruling on one or more claims in a corresponding U.S. application, the applicant can request accelerated examination at INAPI.
The PPH can significantly reduce the time to grant in Chile. To take advantage of it, the applicant must submit the relevant USPTO office actions, allowed claims, and a claims correspondence table showing how the Chilean claims correspond to the allowed U.S. claims.
For U.S.-based companies and their counsel, the PPH is a valuable tool that is worth factoring into your global prosecution strategy.
Common Pitfalls in Chile National Phase Filings
Even experienced patent teams run into issues when filing in Chile. Here are the most frequent ones:
Late translations. The 30-day window for submitting Spanish translations after national phase entry is tight. If your translation vendor is not already lined up, you risk triggering an office action right out of the gate.
Forgetting to request examination. Unlike some jurisdictions where examination is automatic, Chile requires the applicant to affirmatively request it within 60 days after the opposition period closes. Missing this step is one of the most common causes of abandonment.
Underestimating the opposition window. Third parties have 45 working days to oppose after publication. If you are not monitoring for potential challenges, you could be caught off guard.
Overlooking the PPH option. If you already have allowed claims at the USPTO, not leveraging the PPH means leaving time and money on the table.
For Law Firms: Why Local Counsel Matters
If you are a patent attorney or law firm managing PCT national phase entries for clients, Chile requires local representation by a registered patent attorney. But beyond the procedural requirement, having the right local partner makes a material difference in outcomes.
A good Chilean IP firm will not just file papers. They will flag potential issues with your claims before examination, advise on prosecution strategy based on INAPI's examination patterns, coordinate translations efficiently, and keep you updated without you having to chase down status reports.
At Santa Cruz IP, this is the work we do every day. We handle national phase entries for international clients and law firms across a wide range of technology sectors. Our team has deep experience with INAPI's procedures, and we understand how the Chilean patent system fits into broader Latin American and global IP strategies.
Our services for PCT national phase entry include:
Filing and formal compliance, making sure every document is submitted correctly and on time.
Translation coordination, working with qualified translators to meet the 30-day window without sacrificing quality.
Prosecution management, from requesting examination through responding to office actions and managing any oppositions.
PPH filings, for clients with allowed claims at the USPTO or other qualifying offices.
Maintenance fee tracking, so you never miss a payment deadline.
We communicate in English, meet international reporting standards, and provide transparent fee estimates upfront. Whether you are filing a single application or managing a portfolio of entries across Latin America, Santa Cruz IP is built to be the kind of local partner that makes your job easier.
Get in Touch
If you have a PCT application approaching the 30-month deadline for Chile, or if you are planning ahead for future filings, reach out to Santa Cruz IP. We are happy to discuss your case, provide a fee estimate, and walk you through the process. Protecting your invention in Chile starts with getting the national phase entry right.
