International Patent Application: How the Process Works

An international patent application does not automatically grant patent rights in Nepal. Because Nepal is not a PCT member, you must file a national application directly with the Department of Industry under the Patent, Design and Trademark Act 1965.

Key Takeaways

Nepal requires direct national patent filing because the country is outside the PCT system. The Department of Industry examines, publishes and registers applications under the Patent, Design and Trademark Act 1965, while Paris Convention priority may preserve an earlier foreign filing date.

• Nepal is not a member of the Patent Cooperation Treaty, so a PCT filing does not designate Nepal.
• Foreign applicants must file directly at the Department of Industry through a Nepal-based agent or representative.
• Paris Convention priority generally requires filing in Nepal within 12 months of the first foreign application.
• Nepal follows a first-to-file approach: an earlier valid application normally has the stronger position.
• The usual process is filing, examination, publication, a 35-day patent opposition period, registration and certificate issuance.
• A patent lasts seven years initially and may be renewed twice for a possible total of 21 years.
• Specifications, claims, priority records and authority documents should be prepared before the Nepal filing.

Why does a PCT filing not protect Nepal?

Nepal is outside the Patent Cooperation Treaty, so a PCT application cannot designate Nepal as a protected national territory. A PCT filing can support filings in member countries, but it does not replace Nepal patent registration. For the treaty’s current country information, consult WIPO’s PCT resources and then plan a separate Nepal filing.

This distinction matters because “international patent application” can mean two different things. It may describe a PCT application filed through the international system. It may also describe a coordinated filing strategy covering several countries. Neither meaning creates one worldwide patent. Patent rights remain territorial.

If Nepal is commercially important, treat it as its own filing destination. The Nepal application is examined under local law, by the DoI, with its own documents, representation, publication and opposition process. A foreign grant or PCT filing may help establish the invention’s history, but it does not itself produce enforceable rights in Nepal.

How does Paris Convention priority work for Nepal?

Paris Convention priority lets a qualifying applicant claim the date of an earlier foreign patent filing when filing in Nepal within 12 months. The later Nepal application must identify the priority claim and include acceptable evidence, so the earlier date can protect the applicant against intervening filings.

Priority is not a second patent and does not extend the Nepal patent term. It is a filing-date benefit. You must act before the 12-month period ends. A certified or notarised copy of the foreign application or filing receipt may be required, along with any document or translation the DoI requests.

Nepal’s Paris Convention position should be checked for the specific filing strategy and applicant country. The WIPO treaty and priority information is a useful starting point, but local filing advice still matters. Keep the original foreign application number, filing date, applicant details and disclosure consistent across both records.

What is the difference between PCT Nepal and direct filing?

Direct national filing is the only route to a Nepal patent because Nepal is not a PCT contracting state. A PCT application can organise international prosecution elsewhere, while the DoI separately examines the Nepal application under the Patent, Design and Trademark Act 1965.

Do not call a PCT filing the “Nepal national phase.” Nepal has no PCT national phase. The practical route is a fresh national application that refers to the earlier foreign filing when a valid priority claim is available.

Who can file a patent application in Nepal?

An individual inventor, Nepali company or foreign business may seek patent registration in Nepal. A foreign applicant normally acts through a Nepal-based agent or representative, who files papers and handles DoI correspondence, examination responses, hearings and certificate matters.

The applicant may be the inventor, a company or another person entitled to apply. Ownership should be settled before filing. If a company acquired the invention from an employee, founder or research partner, keep the assignment or internal authority records ready. An unclear applicant name can create avoidable correction work later.

Foreign applicants should not assume that a foreign patent attorney can file alone in Nepal. Nepal is a national-only jurisdiction for this purpose. Appointing local representation early also helps with notarisation, translations, document presentation and communication with the DoI.

How do you file an international patent application in Nepal?

The DoI follows a national sequence: application, examination, publication, opposition and registration. For a foreign filing, the process begins with priority review and local representation, then moves through technical prosecution until the certificate is issued.

1. Confirm the filing strategy. Check whether Nepal is commercially important and whether the first foreign filing is still within the 12-month Paris Convention priority period.
2. Assess patentability. Review whether the invention is new and useful, and search relevant prior art before spending time on local prosecution.
3. Appoint a Nepal-based representative. Sign the required Power of Attorney and provide accurate applicant and inventor details.
4. Prepare the specification and claims. Explain the technical problem, solution, working form and variations. Claims define the legal boundary of protection.
5. File at the Department of Industry. Submit the prescribed application, supporting papers, priority evidence and required representations.
6. Answer examination issues. The DoI reviews whether the invention is new and useful and may seek clarification or amendments.
7. Follow publication. If accepted for publication, the application appears in the Industrial Property Bulletin.
8. Protect the opposition deadline. Any interested person may object within 35 days of publication for a patent.
9. Complete registration. If there is no valid opposition, the DoI registers the patent and issues the registration certificate after the applicable formalities.

Our team can help with patent registration in Nepal, including document preparation, filing and responses during prosecution. For technical inventions, claim drafting deserves particular care. A short claim may be easy to read but too narrow to protect the product you will actually sell.

Which documents are needed for foreign patent filing in Nepal?

Foreign applicants should prepare the prescribed application, Power of Attorney, specification, claims and priority evidence. The Department of Industry may require certified or notarised foreign documents and suitable translations, so document form should be checked before submission.

• Prescribed patent application form with the applicant, inventor and representative details.
• Notarised Power of Attorney appointing the Nepal-based agent or representative.
• Full specification explaining the invention and how it can be performed.
• Claims defining the technical scope requested from the DoI.
• An abstract and any drawings needed to understand the invention.
• Certified or notarised copy of the foreign filing receipt or application for a priority claim.
• Certified or notarised foreign patent certificate where the invention is already registered abroad.
• Assignment, company authority or other ownership evidence where the applicant is not the inventor.

Do not send a foreign specification without checking its consistency with the Nepal papers. Differences in inventor names, applicant names, priority dates or claim numbering can lead to questions. The local representative can confirm what must be notarised, translated or filed in a particular case.

How long does patent registration take in Nepal?

Patent registration in Nepal typically takes about 12–14 months from filing to certificate when the application is unopposed. A straightforward case may finish in roughly 6–8 months, but that is the favourable end of the range, not the normal planning assumption.

The timeline depends on technical examination, DoI correspondence, document completeness, publication scheduling and opposition. A patent does not become registered merely because the application was filed. The application must pass examination, be published, complete the 35-day opposition period and satisfy registration formalities.

How long does a Nepal patent last?

A Nepal patent lasts seven years from registration and may be renewed twice for another seven years each. The possible maximum is 21 years, provided the owner completes each renewal on time and meets the applicable Department of Industry requirements.

Renewal is not an afterthought. Record the registration date, renewal periods and ownership details in one internal calendar. If ownership changes, record the transfer properly so the certificate and DoI record do not remain disconnected from the business using the patent.

What does an international patent filing cost in Nepal?

The total cost combines DoI charges with professional work for technical drafting, filing, priority documents, prosecution and renewals. The amount depends on invention complexity, claim strategy, foreign document certification, translation needs and whether examination questions or opposition require additional work.

Do not compare only the application charge. Patent claims and specifications often require more care than ordinary forms. A low-quality filing can leave important commercial versions outside the claims or create delays during examination. For a current estimate based on your invention and foreign filing history, use our contact page; government and professional components should be assessed separately.

What mistakes cause problems with foreign patent filing?

Foreign applicants most often lose time or priority by filing late, disclosing the invention publicly, using inconsistent ownership details or assuming a PCT application covers Nepal. Careful preparation protects the filing date and gives the DoI a clear technical record to examine.

• Missing the 12-month priority window: a late Nepal filing may lose the benefit of the earlier foreign date.
• Public disclosure before filing: a presentation, sale, website or demonstration can create serious novelty problems.
• Weak claims: claims that are too narrow may not cover the product’s practical versions.
• Incomplete technical detail: the specification must explain the invention clearly enough for examination.
• Incorrect applicant information: names, addresses, inventors and priority details must align.
• Ignoring publication: the 35-day opposition period begins after publication in the Bulletin.
• Confusing patent and design protection: a patent protects a technical invention; an industrial design protects appearance.

A common mistake we see is treating “international” as a legal right rather than a filing plan. Before sending materials, decide which countries need protection, which filing dates control priority and who will prosecute each national application.

Can a Nepal business file abroad through an international application?

A Nepal applicant cannot use a PCT filing to obtain Nepal protection, but may consider foreign filing routes for countries that accept them. Nepal-based applicants should examine Paris Convention priority and each destination’s national rules before filing, because rights remain country-specific.

If your first filing is in Nepal, a later foreign application may rely on a priority claim where the destination country and timing rules allow it. If your first filing is abroad, the Nepal application may claim priority within the relevant period. These choices affect disclosure, costs and claim strategy, so obtain advice before publishing or launching.

For the Nepal side, you can review the guide to international patent filing from Nepal and the Nepal patent application process. The official law resources can also help you locate the governing statute.

What is a realistic Nepal patent example?

Imagine “Himalayan Cold Chain,” a Nepali startup developing a low-power milk cooler. It first files abroad, then instructs a Nepal-based agent within 12 months to file the same invention at the DoI with a Paris Convention priority claim.

The agent submits the specification, claims, drawings, Power of Attorney and certified foreign filing record. The DoI examines whether the cooler is new and useful. If accepted, it is published in the Industrial Property Bulletin. An interested person then has 35 days to object. If no valid objection succeeds, the DoI registers the patent and issues the certificate.

The example is hypothetical, but the planning lesson is practical: file before public disclosure, preserve the first filing record and treat Nepal as a separate national prosecution.

What alternatives apply if a patent is not the right protection?

A patent is not the only Nepal IP option. Industrial design registration may protect a product’s shape or visual appearance, while a trademark protects a brand name or logo; confidentiality may protect undisclosed know-how, but it does not replace patent rights after public disclosure.

For example, a new water-filter mechanism may need patent assessment, its casing may need industrial design protection, and its “Himalayan Pure” brand may need trademark registration. These rights solve different problems. Filing one does not automatically protect the others.

Businesses should also separate copyright questions from patent questions. Software code, artwork and written materials may raise copyright issues, while a technical process may raise patent issues. The best route depends on what you created, what has been disclosed and what you need competitors to stop copying.

What should you do before filing a patent in Nepal?

Before filing, preserve confidentiality, confirm the priority date, check ownership, appoint local representation and review the claims with the intended product. These steps reduce avoidable objections and help your application match the invention’s real commercial value.

• Prepare a dated invention record and keep public disclosure controlled.
• Collect every foreign filing receipt, application copy and priority document.
• Confirm the applicant, inventor and ownership chain.
• Ask whether drawings, examples or technical testing support the claims.
• Plan for examination responses, publication and the 35-day opposition period.
• Calendar the initial seven-year term and both possible renewal points.

This article explains Nepal practice in plain language, not legal advice for a particular invention. Patentability, priority and claim scope require a document review. A Nepal patent practitioner can identify risks before the application becomes difficult to correct.

In short: Nepal has no PCT route. A foreign applicant seeking Nepal protection must file directly at the DoI through a Nepal-based representative. File within 12 months for a possible Paris Convention priority claim, prepare strong claims, allow about 12–14 months in ordinary cases, and protect the 35-day opposition and renewal deadlines.

People also search for

• How to register a patent in Nepal
• How to conduct a patent search in Nepal
• What can be patented in Nepal?
• What counts as patent infringement in Nepal?
• How patent renewal works in Nepal
• What affects patent cost in Nepal?

Start by checking the relevant record and technical route, then speak with our team about your filing. Use the patent registration service, send your questions through IP Sewa’s contact page, or review the available free IP tools before preparing your Nepal application.