Intellectual property rights are territorial. A trademark registered in one country, or a patent granted there, generally protects the owner only in that country. A business that sells, licenses or manufactures abroad therefore has to decide where it needs protection, how to get it efficiently, and when an intellectual property lawyer in another country becomes necessary. This guide explains the main international filing routes administered by the World Intellectual Property Organization (WIPO) and the points at which local counsel usually comes in.
This article is general information, not legal advice. Filing strategy depends on the specific rights, markets and deadlines involved, and should be settled with a qualified IP lawyer.
Why IP protection stops at the border
There is no single worldwide patent or worldwide trademark. Under the Paris Convention for the Protection of Industrial Property, patents for the same invention granted in different member states are independent of each other (WIPO, Summary of the Paris Convention). Each country decides whether to grant a right, how long it lasts and how it is enforced in its courts. International treaties make it easier and cheaper to apply in many places, but the rights that result are still national or regional.
Copyright works differently. Under the Berne Convention, protection must not be conditional on compliance with any formality, so works are protected automatically in member states without registration (WIPO, Summary of the Berne Convention). Some countries still offer voluntary copyright registration, which can help as evidence in a dispute, and a local lawyer can say whether it is worth doing there.
The Paris Convention priority period
The Paris Convention gives an applicant who files a regular first application in one member state a period of priority in which to file in other member states. The period is 12 months for patents and utility models and 6 months for industrial designs and marks (WIPO, Summary of the Paris Convention). Applications filed within that window are treated as if filed on the date of the first application.
These deadlines are the reason many businesses first meet a foreign IP lawyer: a filing must reach the right office, in the right form and language, before the priority period expires. Missing the deadline can allow a third party's intervening filing or disclosure to take precedence.
Comparing the main international routes
Three routes are most commonly discussed. Each has a different scope, and none removes the need for national rules to be met somewhere along the way.
Madrid System (trademarks)
- What it covers: Trademarks.
- How it works: One international application and one set of fees to seek protection in multiple Madrid members, managed centrally afterwards, including renewals and changes (WIPO, Madrid System).
- Starting requirement: The applicant must already have, or have applied for, a national or regional trademark with the IP office of a Madrid member (WIPO, Madrid System).
- Who decides protection: Each designated member examines the mark under its own law; a refusal by one member does not affect protection in others (WIPO, Madrid System).
- When local counsel is usually needed: Responding to a provisional refusal, opposing or defending an opposition, and enforcement.
Patent Cooperation Treaty (patents)
- What it covers: Patents for inventions.
- How it works: One international application has the same legal effect as filing separate applications in all PCT contracting states (WIPO, PCT System).
- Starting requirement: An international application filed with a competent receiving office, often claiming priority from an earlier national filing.
- Who decides protection: National or regional patent offices; the granting of patents remains under their control (WIPO, PCT FAQs).
- When local counsel is usually needed: Entering the national phase, which generally takes place at 30 months from the priority date (WIPO, PCT FAQs), and then prosecution before each office.
Direct national filing
- What it covers: Any registrable right, filed separately in each country.
- How it works: A separate application to each national or regional office, under its own rules and in its own language.
- Starting requirement: Varies by country; some offices require a local agent or address for service for foreign applicants.
- Who decides protection: The national or regional office.
- When local counsel is usually needed: From the start, where a local agent is required or where the country is outside the treaty systems.
When a local IP lawyer becomes necessary
Even when an international route is used, several moments typically call for a lawyer or registered agent in the country concerned:
- Before launch: searching whether an identical or similar mark is already registered or used in that market, and whether the brand name has an unfortunate meaning in the local language.
- During examination: answering objections from the national office, which usually must be filed through a locally qualified representative.
- Oppositions: filing or defending an opposition against a conflicting application within a fixed local deadline.
- Licensing and distribution: drafting or reviewing licence, franchise and distribution agreements so they work under local law, including any recordal requirements.
- Enforcement: customs recordals, cease-and-desist letters, online takedowns and court action against infringers or counterfeiters.
- Ownership questions: confirming who owns rights created by employees or contractors in that country, since rules on employee inventions and commissioned works vary.
Checklist: choosing an IP lawyer in another country
- Confirm the right qualification. In some countries, only registered patent or trademark agents can act before the IP office; in others, any admitted lawyer can. Ask which qualification applies and verify it with the regulator or the IP office's register of agents where one exists.
- Match the practice to the right. Patent work generally needs technical expertise in the relevant field; trademark and copyright work needs brand and enforcement experience. Ask which the firm handles in-house.
- Check deadline handling. Ask how the firm tracks deadlines and how it confirms filings and receipts back to the client.
- Clarify fees. Official fees, translation costs and professional fees are often separate. Ask for a written estimate per stage, including national phase entry or responses to refusals.
- Ask about conflicts. Confirm the firm does not act for a competitor in a related matter.
- Agree communication. Confirm language, reporting format and who the day-to-day contact will be.
Finding IP counsel through an international legal network
Global Law Lists maintains an intellectual property law practice area page and law firm lists by country that can help build a first shortlist in an unfamiliar jurisdiction. Global Law Lists operates these lists, and listed firms may hold paid memberships; the verification methodology explains how firms are checked and ordered. A listing does not replace confirming the lawyer's or agent's registration with the local regulator or IP office. Businesses whose IP sits inside wider commercial arrangements may also want to review business and corporate law support in the same market.
Frequently asked questions
Is there such a thing as an international patent?
No. The PCT lets an applicant file one international application, but patents are granted by national or regional offices, which keep control of the grant decision (WIPO, PCT FAQs).
Do I need an intellectual property lawyer in every country?
Not always at the filing stage, because the Madrid System and the PCT allow centralised filing. Local counsel is usually needed when an office raises objections, at PCT national phase entry, in oppositions and for enforcement.
How long do I have to file abroad after my first application?
Under the Paris Convention, 12 months for patents and utility models, and 6 months for industrial designs and trademarks, measured from the first regular application (WIPO, Summary of the Paris Convention).
Do I need to register copyright abroad?
Under the Berne Convention, copyright protection does not depend on formalities such as registration in member states. Voluntary registration exists in some countries and may help as evidence.
What does an intellectual property lawyer do in a cross-border dispute?
Typically, they assess the client's rights in that country, send demand letters, coordinate customs or online takedown measures, and represent the client before the local IP office or courts.
Sources
- Summary of the Paris Convention for the Protection of Industrial Property (1883), World Intellectual Property Organization, accessed 10 October 2026
- Summary of the Berne Convention for the Protection of Literary and Artistic Works (1886), World Intellectual Property Organization, accessed 10 October 2026
- Madrid System overview, World Intellectual Property Organization, accessed 10 October 2026
- PCT System overview and PCT Frequently Asked Questions, World Intellectual Property Organization, accessed 10 October 2026
- Global Law Lists, Verification methodology, globallawlists.org, accessed 10 October 2026