Q1072. How are foreign patent and trademark registration certificates protected and recognized in Thailand?

Answered by the NYC Visa & Translation legalization desk

Foreign registration certificates can support a Thai intellectual property application, but they do not automatically create patent or trademark protection in Thailand. First, check whether protection has already been sought through a Thai application or an applicable international filing system. For trademarks, an international registration designating Thailand may be relevant; for patents, a PCT application requires the appropriate Thai national-phase steps. Next, ask the Department of Intellectual Property which certificates, translations, powers of attorney, and authentication are required for your procedure. Legalization, where requested, authenticates the supporting document rather than extending foreign rights into Thailand. A common pitfall is assuming a legalized foreign certificate replaces Thai registration or examination. Verify the requirements with Thailand’s Department of Intellectual Property before filing.