Trademark Registration in Thailand: Process, Timeline, and Cost

Thailand runs on a first-to-file trademark system, not first-to-use. That single fact surprises more foreign business owners than any other part of the process — having used a mark for years elsewhere, or even having built genuine brand recognition inside Thailand, gives you no automatic legal right to it here. If someone else files first, they hold the mark, and the burden shifts to you to fight for it rather than simply defend what you already have.

Why “We’ve Used This Brand for Years” Doesn’t Protect You

Under Thailand’s Trademark Act, rights are established through registration with the Department of Intellectual Property (DIP), not through use. A foreign trademark registered in your home country provides no automatic protection in Thailand — you need either a separate Thai filing or designation of Thailand through the Madrid Protocol if your home jurisdiction participates in it. Businesses that assume their existing international registration covers them in Thailand, and delay filing locally, are the ones most exposed to trademark squatting — a real and recurring problem in Thailand’s market, where third parties register marks they have no intention of using commercially, purely to sell the registration back to the legitimate brand owner or to block market entry.

The practical rule: if you plan to do business in Thailand under a given name or mark, file before you need to, not after a conflict arises.

The Registration Process, Stage by Stage

1. Trademark search. Before filing, search the DIP’s database (accessible at tmsearch.ipthailand.go.th) for conflicting marks. A basic online search takes a day or two; a thorough professional clearance search — which also checks for similar marks that might not surface in a straightforward keyword search — typically takes closer to a week and is worth the extra time given what’s at stake in a first-to-file system.

2. Filing the application. Applications can be submitted in person at the DIP or through its electronic filing system. Foreign applicants without a fixed place of business in Thailand must appoint a local agent or attorney holding a valid power of attorney to file on their behalf.

3. Examination. The DIP Registrar conducts both a formal examination (checking that documentation is complete) and a substantive examination (assessing whether the mark is sufficiently distinctive and whether it conflicts with existing registrations). This phase typically takes six to twelve months under standard processing. If the Registrar raises objections, an office action is issued and the applicant must respond — usually with amendments to the application or arguments addressing the specific objection — within a set deadline, or risk the application being deemed abandoned.

4. Publication and opposition. Once a mark clears examination, it’s published in the Official Trademark Gazette for a 90-day opposition window (with some processes citing 60 days depending on the application track — the applicable window should be confirmed against your specific filing). During this period, any third party who believes they hold superior rights, or that the mark shouldn’t be registered for some other legal reason, can file an opposition. If opposed, you have a limited window — commonly 60 days — to file a counter-statement, and a full opposition proceeding can extend the overall timeline by six to twelve months. Many opposition cases resolve through negotiation or coexistence agreements rather than running to a full contested decision.

5. Registration. If no opposition is filed, or an opposition is resolved in the applicant’s favor, the DIP orders registration upon payment of the official registration fee, and issues a Certificate of Registration.

End-to-end timeline: for a straightforward application with no office actions and no opposition, the full process commonly runs 12 to 18 months from filing to certificate. Anything requiring amendment, a contested office action, or an opposition proceeding extends that meaningfully.

What It Costs

Government filing fees are structured per class of goods or services — a single application covering multiple classes costs proportionally more, and businesses often under-scope their initial filing to save on upfront fees, only to find their actual product or service range isn’t fully covered. Beyond government fees, total registration cost including legal fees for a straightforward single-class application commonly runs in the range of several hundred US dollars, with cost scaling for additional classes, professional search work, or any opposition proceeding.

After Registration: What You Actually Have to Maintain

10-year validity, indefinitely renewable. A Thai trademark registration lasts 10 years from the registration date and can be renewed for successive 10-year terms with no limit. Renewal applications should be filed within 90 days before expiry; a six-month grace period exists after expiry, but comes with a fee surcharge — commonly around 20% above the standard renewal fee.

Non-use cancellation risk. A registered mark that goes unused for three consecutive years becomes vulnerable to a cancellation action from a third party. Registering a mark defensively and never using it commercially isn’t a permanent safe harbor — active use matters for keeping the registration enforceable, not just for obtaining it in the first place.

® vs. ™ usage. The ® symbol may only be used for marks actually registered in Thailand — using it for an unregistered or merely-applied-for mark is a criminal offense under the Trademark Act. The ™ symbol, without the legal weight of registration, remains available for marks that haven’t yet completed the process.

Enforcement: Registration Is the Start, Not the Finish

Owning a Thai trademark registration doesn’t enforce itself. For counterfeiting and clear infringement cases, criminal enforcement — filing a complaint that leads to police action against counterfeiters — is often faster and more cost-effective than pursuing civil litigation, particularly where the priority is stopping active infringement quickly rather than recovering damages. Civil litigation remains the appropriate route for disputes over rightful ownership, coexistence terms, or damages beyond what criminal enforcement addresses.

How Harwell Legal Helps

We conduct clearance searches before filing to assess genuine registrability risk, manage DIP filings and office action responses, represent clients in opposition proceedings, and handle both criminal and civil enforcement against infringement once a mark is registered. For businesses expanding into Thailand, we assess Thai filing alongside — not as an afterthought to — existing international trademark portfolios.

Building a brand in Thailand? [Contact Harwell Legal International] to file before a competitor or trademark squatter files first — in a first-to-file system, early filing is the entire strategy.