Trademarks, Copyright & Patents

A registered trademark is protected for ten years from the filing date and renewable for further ten-year terms under sections 53 and 54 of the Trademark Act B.E. 2534, with a 60-day opposition window from publication under section 35. Thailand joined the Madrid Protocol on 7 November 2017. Copyright under the Copyright Act B.E. 2537 arises automatically on creation; recordal with the Department of Intellectual Property is evidential only, and the general term is the life of the author plus fifty years under section 19. Under the Patent Act B.E. 2522 an invention patent runs twenty years from filing, a petty patent six years renewable twice by two years each, and a design patent ten years.

Updated August 2026. Subordinate criteria change by notification — verify with dbd.go.th, boi.go.th, ipthailand.go.th and pdpc.or.th before acting.