Trademark Registration | DIP Filing & Opposition

Trademarks in Thailand are registered with the Department of Intellectual Property under the Trademark Act B.E. 2534. An accepted application is published for opposition, with a 60-day opposition period from publication. Registration runs 10 years and is renewable for successive 10-year terms.

Governing authority / legal basis: Trademark Act B.E. 2534 (1991), as amended; administered by the Department of Intellectual Property, Ministry of Commerce. Thailand has been a party to the Madrid Protocol since 7 November 2017.
Turnaround: A search and classification memo is normally ready within a few working days. Examination, publication and the opposition period run on the Department's own timetable and are measured in months rather than weeks; the Department's published status is the authority.
Fees: Quoted per matter once we see the shareholding, the activity and the documents already on file. Government and registrar fees are charged at the authority's own rate and are separate. Confirm scope and fees with our staff by phone, Line or Email before any filing is prepared.

What we handle

Availability search

A search of the register for identical and confusingly similar marks in the relevant classes, with a written view on the risk of refusal or opposition.

Classification

Goods and services specified under the Nice classification, drafted to cover the actual commercial use rather than the widest possible wording.

Filing and prosecution

Filing with the Department of Intellectual Property and responding to examination reports and office actions.

Publication, opposition and renewal

Monitoring through publication, handling the 60-day opposition window, and diarising the 10-year renewal.

Documents required

Document	Issued / prepared by	Watch out for
The mark itself	Client	A clear representation. A word mark, a device and a combined mark are different applications with different scope.
List of goods or services	Client	What is actually sold or provided in Thailand, and what is planned. Over-broad lists attract objections.
Applicant details	Client	Exact legal name and address of the owner. Registering in the wrong entity is expensive to correct later.
Power of attorney	Applicant	Signed by the authorised person; where the applicant is abroad, notarisation and legalisation may be required.
Priority document	Home registry	Where priority from an earlier foreign application is claimed, within the applicable period.

Document lists, official fees and acceptance conditions vary between offices, branches and provinces, and change by notification. Confirm with the receiving authority before you act on this page.

How the process runs

1
Search and advice
We search the register and give a written view before spending anything on a filing that is likely to be refused.
2
Filing
The application is filed with the Department of Intellectual Property in the agreed classes.
3
Examination and publication
We respond to examination reports, then monitor the publication and the 60-day opposition period.
4
Registration and upkeep
On registration you receive the certificate, and we diarise the renewal and any recordals such as an assignment or change of owner's name.

Why files get rejected

Thailand operates a first-to-file system. Prior use abroad does not by itself defeat an earlier Thai filing by someone else.
Descriptive marks and marks that merely indicate the character of the goods face objections. A distinctive mark filed narrowly usually outperforms a descriptive mark filed broadly.
The Madrid Protocol route can designate Thailand from an international registration, but examination and opposition still happen locally under the Trademark Act.
A registered trademark is not a company name, a domain, or a copyright. Overlapping protection has to be arranged deliberately.
No adviser can promise registration. A search reduces risk, it does not remove the examiner's discretion or a third party's right to oppose.

Frequently asked questions

คำถามที่พบบ่อย (FAQ)

How long does trademark protection last in Thailand?+

Registration runs for 10 years from the filing date and is renewable for successive 10-year terms under the Trademark Act B.E. 2534. Missing a renewal is the most common way a long-held mark is lost.

How long is the opposition period?+

An application accepted by the examiner is published, and a third party may oppose within 60 days of publication. Monitoring the publication matters as much for your competitors' marks as for your own.

Can a foreign company own a Thai trademark?+

Yes. A foreign applicant registers in its own name, usually through a local agent with a power of attorney, and where the applicant is abroad that power may need notarisation and legalisation.

Should we use the Madrid Protocol or file directly?+

It depends on how many countries are in scope and how the portfolio will be managed. Thailand has been a Madrid Protocol member since 7 November 2017, so both routes are available; a single-country entry is often simpler filed directly.

Do we need a search before filing?+

It is not compulsory, but filing into a conflict wastes both the official fee and the months of examination. A search also shapes the specification so the application is easier to accept.

Authoritative Sources

References & Citations

Official government, legal, and international sources cited throughout this page.

1
Department of Intellectual Property· แหล่งทางการ
Department of Intellectual Property, Ministry of Commerce ↗
www.ipthailand.go.th
2
WIPO· แหล่งทางการ
WIPO — Madrid System members ↗
www.wipo.int
3
Department of Business Development· แหล่งทางการ
Department of Business Development, Ministry of Commerce ↗
www.dbd.go.th

ลิงก์ภายนอกเปิดแท็บใหม่ · ใช้ rel="noopener" เพื่อความปลอดภัย · เนื้อหาในแหล่งอ้างอิงเป็นทรัพย์สินของเจ้าของลิขสิทธิ์

General information, not legal advice on your specific matter. We are not a bank, not an insurance broker and not an agent of any state authority, and we do not guarantee any authority's decision.

Talk to us before you file — reply within 24 hours

Tell us your nationality, visa category and the deadline. Our staff confirms the scope and the fee by phone, Line or Email before any work begins.

Chat on Line Call 094-8958999 Email contact@thainotary.co.th

Explore More

Deep Context and Service Standards

Sourced from the Lawyer Act B.E. 2528 (1985), the Lawyers Council Regulation on Notarial Services Attorneys B.E. 2546 (2003), the Personal Data Protection Act B.E. 2562 (2019), the Hague Apostille Convention of 1961, and official publications of the Department of Consular Affairs (MFA).

Firm Overview and Practice Framework

Thai Notary Service is a full-service Thai law office providing document notarization, certified translation, legalization chain management, and international document consultancy. Our team includes Notarial Services Attorneys licensed by the Lawyers Council of Thailand under the Royal Patronage, and we operate offices in Bangkok, Greater Bangkok, and a partner network in every province across Thailand. We serve individuals, expatriates, cross-border couples, students, corporates, multinationals, and government agencies requiring documents with legal effect both inside Thailand and abroad.

All notarial acts follow the Lawyer Act B.E. 2528 (1985) Section 27 read with the Lawyers Council Regulation on Notarial Services Attorneys B.E. 2546 (2003), the sole legal basis authorizing Thai attorneys to certify documents comparable to a foreign Notary Public. Every attorney on our team has completed the accredited training and examination administered by the Lawyers Council and holds a verifiable registration number searchable on the Lawyers Council public registry.

By choosing a firm that houses Notarial Services Attorneys in-house, clients consolidate a multi-stage legalization chain under one accountable roof: attorney notarization, followed by Ministry of Foreign Affairs (MFA) legalization at the Department of Consular Affairs, followed by embassy or consular legalization for the destination country. Since 21 November 2024 the Kingdom of Thailand has become a party to the Hague Apostille Convention (Convention of 5 October 1961 Abolishing the Requirement of Legalisation for Foreign Public Documents). Documents apostilled in Thailand are now accepted in more than 125 member states without embassy re-legalization, materially reducing turnaround time and cost.

General Information and Firm Framework — Deep Context

The firm operates under an ISO 9001:2015 quality-management framework and enforces data protection consistent with the Personal Data Protection Act B.E. 2562 (2019). All client documents are stored with AES-256 encryption at rest and in transit and are retained for ten years in accordance with lawyer-record obligations under the Lawyer Act.

Our team combines Notarial Services Attorneys, NAATI-certified translators, and legal specialists in intellectual property, taxation, cross-border family law, corporate law, and immigration law, together with a support team dedicated to documentation, translation, and government-agency liaison.

Fees are transparent and disclosed both on the website and in the pre-engagement quote, separating professional fees, government fees, travel disbursements (if any), and other line items. The firm issues VAT invoices and official receipts and accepts payment by bank transfer, credit card, PromptPay, and cash.

Trust Standards — PDPA, SLA, Quality Assurance

On data protection, the firm strictly follows the Personal Data Protection Act B.E. 2562 (2019), Sections 24, 26, and 27 — collecting, using, and disclosing personal data only to the extent necessary for the engagement, disclosing purposes, and obtaining consent from data subjects in advance. Clients retain the right to inspect, obtain a copy, rectify, erase, or withdraw consent at any time through the firm's Data Protection Officer (DPO). For clients in the European Union, processing follows GDPR Article 6 (lawful basis) and Article 46 (Standard Contractual Clauses).

Our Service Level Agreement targets an inquiry response within one hour during business hours (09:00–18:00, Monday to Saturday), attorney appointments within twenty-four hours, standard notarization within one business day (or two to three hours on express service), certified translation within three to five business days per ten A4 pages, MFA legalization within two business days on standard service (one business day express), and embassy legalization typically within three to fifteen business days depending on the mission's own policy.

Every deliverable passes a three-tier quality-assurance chain: (1) the responsible attorney or translator, (2) a Senior Attorney or department head reviewing substance and formatting, (3) a Quality Control desk performing the final pre-delivery check. Any firm-side error is remedied at no additional cost, and if a document is rejected by a government authority due to a firm-side error, we cover the entire re-filing fee.

Contact and Initial Consultation

Initial consultation is complimentary via Line @thainotary or by phone at 094-8958999. The team responds within one hour during business hours. Every inquiry is treated confidentially under the Lawyers Council ethics rules and the Personal Data Protection Act.

Trademark registration in Thailand