Powers of attorney, corporate documents and translations for IP filings

Applications are filed with the Department of Intellectual Property under the Ministry of Commerce, either in person or through the department's electronic filing system. The core papers are the application form with a representation of the mark, a clearly worded list of goods or services, proof of the applicant such as an ID card or a company affidavit from the Department of Business Development, and a power of attorney if an agent files. An applicant resident abroad must have an agent or a contact address in Thailand.

Thailand has been bound by the Patent Cooperation Treaty since 24 December 2009. An applicant with an international application may enter the Thai national phase within thirty months of the priority date by filing a Thai translation of the description and claims, together with the power of attorney and supporting papers, at the Department of Intellectual Property.

Define confidential information precisely with the standard carve-outs, state how long obligations survive termination, name the governing law and the dispute forum, and verify from the company affidavit that the Thai signatory actually has authority. If the agreement may be used before a Thai authority or court, prepare a bilingual version and state which language prevails on conflict.

Normally it is signed before a notary public or other competent officer in that country, then legalised through the chain up to the Royal Thai Embassy or Consulate, then translated into Thai and the translation certified by the Legalization Division of the Department of Consular Affairs. Once the Apostille Convention takes effect for Thailand on 28 February 2027, documents from member states can use an apostille instead of the chain legalisation.

Typically a certificate of incorporation or a certificate of good standing issued within the last six months, evidence of the signatory's authority, and a power of attorney stating the mandate clearly. Every document needs a Thai translation with the translation certified. Company and signatory names must be spelled identically across all papers, since a single-letter difference is the most frequent cause of office actions.

The DIP accepts a power of attorney signed by an authorised officer of the foreign company with a certified Thai translation. It is generally notarised in the country of origin; once Thailand's Apostille Convention accession takes effect on 28 February 2027 an apostille will replace embassy legalisation. Draft the scope to cover filing, amendment, appeal and withdrawal.

Yes — there is no nationality restriction and no Thai company is needed. An applicant without a Thai domicile must appoint a representative resident in Thailand to receive registrar correspondence. The power of attorney must be certified as prescribed, and the applicant's address should match its home corporate records to avoid later office actions.

The international application must mirror a Thai basic application or registration in owner, mark and goods. For the first five years it remains dependent on that basic mark: if the basic filing is refused or cancelled, the international registration is affected and must be transformed into national applications within the deadline. Each designated country also examines under its own law and may issue a provisional refusal that has to be answered through a local agent.

The authorised signatory normally signs before a notary public or a Thai consular officer in that country. The signature is then certified through that country's chain and by the Royal Thai Embassy or Consulate. Once in Thailand the document is translated into Thai and the translation is certified by the Legalisation Division of the Department of Consular Affairs before filing with the Department of Intellectual Property. Draft the mandate broadly enough to cover filing, amendments, appeals and receipt of registrar notices.

An applicant without a domicile in Thailand must appoint an agent with a Thai address to receive the registrar's notices. The power of attorney is signed before a notary abroad and then apostilled, or legalised by the Royal Thai Embassy where the Hague Convention does not apply, and filed with a certified Thai translation. A defective power triggers an office action and a fresh deadline, putting the original filing date at risk.

Assignments and licence agreements must be in writing and recorded with the registrar, otherwise they cannot be raised against third parties. A licence must set out the owner's quality control, the goods covered, the territory and the term. Where a party signs abroad, the signature should be notarised and apostilled or legalised by the Royal Thai Embassy, with a certified Thai translation.

The Central Intellectual Property and International Trade Court has nationwide jurisdiction and sits with associate judges experienced in the field. It hears civil claims for damages and injunctions as well as criminal cases for counterfeiting or imitation of marks. Title documents issued abroad must be notarised and legalised before Thai translation, or the court may decline to admit them.

You need form Kor.01, a clear representation of the mark, a goods or services list classified under the Nice system, proof of identity such as an ID card or company affidavit, and a stamped power of attorney if an agent files. Applicants based abroad must appoint a Thai representative. The process runs from a clearance search, to filing, examination, 60-day publication for opposition, then payment of the registration fee.

Usually a certified copy of the certificate issued by the Department of Intellectual Property, translated into the destination language, with the translation certified by the Department of Consular Affairs. Hague Convention countries accept an Apostille; non-member countries also require destination embassy legalisation. Powers of attorney for foreign agents usually need notarisation first.

Our advisers have handled cross-border filings and documentation for over 15 years. We cover clearance searches, class drafting, filing and office-action responses, Madrid or PCT expansion strategy, translations and legalisation, plus online infringement monitoring and coordination with Thai Customs. Contact us by phone or LINE for a portfolio review before any work begins.