Intellectual Property in Thailand

What you need to know

Intellectual property is not one registration that covers every business asset. A name or logo, a technical invention, a product's appearance, original software or marketing material, and confidential know-how are protected in different ways. The first practical task is an asset inventory: record what the business uses, who created it, where it is used, whether it has already been disclosed and which countries matter commercially. The Department of Intellectual Property (DIP), Ministry of Commerce, is Thailand's national IP office, but the correct next step depends on the asset and the facts. Trademarks are the main route for protecting signs that distinguish goods or services, such as a business or product name, logo or other brand element. DIP states that a registrable mark must be distinctive, must not be prohibited and must not be the same as or confusingly similar to an earlier registered mark. Before investing in packaging, signage or advertising, search relevant records and consider the goods and services for which the mark will be used. A company name, domain name or social-media handle is not a substitute for analysing trademark availability. The application must identify the owner correctly and describe the relevant goods or services; foreign applicants and powers of attorney can require additional formalities.

Technical inventions may call for an invention patent or a petty patent. DIP's published patent criteria require novelty, an inventive step and industrial applicability for an invention patent. Its petty-patent material describes protection for inventions that are new and industrially applicable, providing a different route for some incremental technical developments. The choice affects the examination path, scope and duration of protection, so it should be made with a registered Thai patent professional where the invention is commercially important. Avoid public disclosure before a filing strategy has been considered: presentations, sales, demonstrations or online publication can undermine novelty. Prepare a clear technical description, drawings where needed, ownership evidence and a record of inventors before filing. A product's visual appearance is different from how it works. DIP describes a design patent as protection for a new product appearance used in industry or craftwork. An application relies heavily on drawings or photographs showing the design clearly from the relevant views, and an applicant who is not the creator needs evidence of the right to apply. A single product may therefore need more than one form of protection: a trademark for the brand, a design patent for appearance, and a patent or petty patent for a qualifying technical feature. Do not assume that one filing protects all three.

Copyright protects qualifying original expression such as literary, artistic and musical works, photographs, films and computer programs. DIP explains that copyright protection arises automatically and does not require registration. It protects the expression of an idea rather than the idea, process, system or method itself. Businesses should nevertheless keep dated source files, drafts, publication records and contracts because ownership and evidence can become decisive in a dispute. Check employment, commissioned-work, agency and software-development agreements rather than assuming the paying company automatically owns every right. DIP offers a copyright-information notification process, but a notification should not be described as creating a right that the law protects automatically. Trade-secret protection is appropriate for valuable information that is not generally known or readily accessible and whose commercial value comes from secrecy. The Thai Trade Secrets Act also requires the controller to take appropriate measures to maintain that secrecy. Practical controls can include access limited by role, confidentiality clauses, secure repositories, document classification, staff departure procedures and clear rules for suppliers and potential investors. Calling ordinary or widely shared information confidential is not enough. Independent discovery and, subject to the Act and any agreement, reverse engineering are treated differently from dishonest acquisition or breach of confidence, so trade secrets are not a substitute for filing a patent when exclusive rights against independent development are essential.

Ownership and contracts should be resolved early. Record the correct individual or company owner for each asset; obtain written assignments where rights need to move; define what employees, founders, contractors and joint-venture partners create; and set licence terms for territory, scope, duration, quality control, confidentiality and permitted use. When collaborating across borders, check both Thai law and the law of each relevant market. IP rights are territorial: a Thai filing does not automatically secure protection everywhere. WIPO's PCT and Madrid systems may assist with multi-country patent and trademark strategies, but they do not remove the need to select countries, meet deadlines and satisfy local requirements. A sensible next-action plan is to prioritise the assets that drive revenue or would be hardest to replace, conduct the appropriate searches, stop avoidable disclosure, confirm ownership and obtain advice on filing or confidentiality measures. Keep a central register of applications, registrations, licences, renewal dates, evidence of use and suspected infringements. If another party may be infringing a right, preserve evidence before contacting them and obtain Thai legal advice on options and risk. The correct remedy and forum depend on the right, ownership, conduct and evidence; this page is a planning guide rather than a legal opinion on a particular dispute.