Thailand (country code: TH) has acceded to the Patent Cooperation Treaty ("PCT") on 24 September 2009. Thailand is the 142nd contracting state to accede to this multilateral pact that facilitates the filing of patents in multiple countries. The treaty will enter into force for Thailand on 24 December 2009.
With respect to any international applications filed on or after 24 December 2009, Thailand will be automatically designated and will be elected in any demand for international preliminary examinations. Nationals and residents of Thailand will also be able to file PCT applications from 24 December 2009.