A patent may be granted for an invention which is new, inventive, and capable of industrial application. Thailand law also recognizes petty patents for protection of designs that are new and have industrial applicability (no inventive step is required).
It is not mandatory to file a patent application in the country where the product was originally developed. Once the application is filed in Thailand, filing the patent in other subsequent countries can be done with priority claim based on the Thailand patent. However, in accordance with TRIPS (Thailand is a member), these countries would have to be designated within one year from the date of filing.
If your company resides in a Patent Cooperation Treaty (PCT) country, you may want to file a PCT patent application simultaneously with a patent application in Thailand. A PCT patent application will allow you to postpone the filing of your patent in other PCT member countries for a designated period of time.
Government fees for a standard patent application are approximately USD125.