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ภาพรวมทีมทนาย Notary Public ของ NAATI พร้อมวิววัดอรุณราชวราราม
Department of Intellectual Property

Trademark registration in Thailand

Thailand is a first-to-file jurisdiction. The date your application is received usually beats an earlier user who never registered, which makes filing early — and filing correctly — the whole game.

Document preparation at our Bangkok office for Trademark registration in Thailand
Our Bangkok team preparing client documents. Photo: NAATI Co., Ltd.

What decides a Thai trademark application

Two things sink most filings: a mark that is too descriptive to be distinctive in Thai or in English, and a specification of goods copied wholesale from a class heading. Both draw an office action, both cost months, and neither is visible to an applicant filing without a search. We search first, draft the specification to survive examination, and only then file.

What we handle

Availability search

Knock-out and full searches across the Thai register in the classes that matter to you.

Nice classification

Specifications drafted to survive examination rather than copied from a class heading.

Filing and prosecution

DIP filing, office action responses, evidence of distinctiveness and amendments.

Opposition and appeals

Oppositions filed and defended, Board of Trademarks appeals and IP Court referrals.

Madrid designations

International registrations designating Thailand, and Thai-based applications reaching outward.

Portfolio maintenance

Renewal diary, assignment and licence recordals, and change-of-name updates.

How a filing runs

  1. 1. Search

    We check the mark against the register and report the real risk of refusal per class.

  2. 2. Specification drafting

    Goods and services described in wording the examiner accepts.

  3. 3. Power of attorney

    Notarised and legalised for foreign applicants; we prepare the wording.

  4. 4. Filing

    Application submitted and the filing date secured.

  5. 5. Examination

    Office actions answered within deadline with supporting evidence.

  6. 6. Publication, registration, renewal

    Opposition window monitored, certificate issued, renewal diarised for year ten.

Frequently asked questions

Who can own a Thai trademark?

Any individual or company, Thai or foreign. A foreign applicant without a place of business in Thailand must appoint a local agent with a power of attorney, and that power of attorney generally has to be notarised and legalised in the country where it is signed.

How long does registration take?

A straightforward mark that faces no objection and no opposition typically reaches registration in roughly twelve to eighteen months from filing. An office action or an opposition adds materially to that. Rights run from the filing date once registration is granted, so an early filing date is worth protecting even in a slow queue.

Should I run a search before filing?

Always. The Department of Intellectual Property refuses marks that are identical or confusingly similar to earlier marks in related classes, and refusal loses both the fee and the filing date. A knock-out search across the relevant classes is cheap compared with refiling a rebranded mark.

What are classes and how many do I need?

Thailand uses the Nice classification of 45 classes covering goods and services. Protection is granted per class, and the specification of goods must be precise — broad claims covering an entire class heading are routinely objected to. Most businesses file in the two or three classes where they actually trade plus the class of their most likely counterfeit.

What happens if the examiner objects?

You receive an office action giving a deadline to respond, typically on distinctiveness, similarity to an earlier mark, or specification wording. A reasoned response with evidence of use, a disclaimer, or an amended specification resolves most objections. Missing the deadline abandons the application.

What is opposition?

After examination the mark is published, and third parties have a statutory window to oppose. Opposition is adversarial, with pleadings and evidence on both sides and a decision that can be appealed to the Board of Trademarks and then to the Central Intellectual Property and International Trade Court.

How long does a registration last?

Ten years from the filing date, renewable for further ten-year terms indefinitely. Renewal must be requested within the statutory window around expiry — a lapsed registration can be picked up by a competitor.

Can I use the Madrid Protocol?

Yes. Thailand is a Madrid member, so an international registration can designate Thailand and a Thai application can be used as the basis for designating other members. The Thai office still examines the designation on national grounds, so a Madrid route does not avoid a local objection — it only simplifies the filing mechanics.

Official sources

Related services

One team handles the full chain — translation, notarisation, MFA legalisation and embassy attestation — so your document is accepted the first time.

Not sure which route your document needs?

Send a photo or scan and our staff will confirm the exact steps, supporting documents and realistic turnaround under the receiving authority's current rules.

Free knock-out search

Send the mark, a logo file if you have one, and the goods or services you sell. We reply with a class recommendation and an honest read on the risk of refusal before you spend anything on filing.

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