– Patent Act, enforced on September 27, 1999.

– Convention Establishing the World Intellectual Property Organization (WIPO), since December 25, 1989.
– WTO’s TRIPS Agreement, since January 1, 1995.
– Paris Convention for the Protection of Industrial Property, Stockholm Act, since August 2, 2008.

Applicants, Foreigners: same as for “patents“.

Not protectable: inventions which (1) are not novel and (2) do not apply to industry.

Priority, Novelty: same as for “patents“.

Filing requirements: same as for “patents“.

Note: the Patent Act does not allow anyone to apply for both a patent and a petty patent for the same invention. However, at any time before a patent or a petty patent is granted, or before the publication of a patent application, as the case may be, an application may change the type of right applied for from patent to petty patent, or vice versa.

Formal examination: same as for “patents“.

Opposition: none.

Novelty examination: within one year from the date of publication of the registration of an invention and the issuance of a petty patent, any interested person may request an inspection to determine whether the invention to which the petty patent was granted is new and industrially applicable.

Granting decision, Appeal: same as for “patents“.

Duration: six years from the date of application.

Extension: the term may be extended twice, for a period of two years each time.

Annuities, Working, Compulsory licenses, Infringement and penalties: same as for “patents“.

Surrender of petty patent or claims: any patentee may surrender a petty patent or any claim or claims.

Cancellation: the patentee may surrender his patent or revoke some of his/her claims during the patent’s duration. The Director General may ask the Board to revoke the patent if (1) it appears, after two years of issuance of a license, that the licensing cannot effectively prevent or alleviate the following conditions: there is no production of the patented product or no application of the patented process in Thailand with no reason; the production of the patented product or application of the patented process is not sold or imported or sold at a reasonable price; and the Director General determines that such patent be revoked; (2) the license agreement was not made in written form and registered; the patentee or licensee will first be informed of such a determination, and be given sixty days to respond.

License, Assignment: same as for “patents“.