- Grant fee: Authorization official fee should be paid within 2 months after receiving the granted notice.
 - Annuity: should be paid after the patent is granted in Thailand. If the patent has been issued, the first annual fee should be paid within 60 days after the start of the fifth year of the patent validity period.
 
Filing Language: Thai
via Paris Convention via Nationalization of PCT Necessary documents:
- Abstract
 - Abstract Drawing
 - Claim
 - Specification
 - Drawing
 
Necessary documents:
- Abstract
 - Abstract Drawing
 - Claim
 - Specification
 - Drawing
 
Attachments (if any)
- Sequence Listing (PDF format and TXT format)
 - Microorganism deposit certificate and its Thai translation
 - Microorganism Survival Certificate and Thai Translation
 - Power of Attorney
 - Certified Priority Document
 - Declaration of Ownership/Certification of Employment/Assignment of priority
 - Assignment for Patent Right Transfer
 - Notification issued by CNIPA notify the applicant the application has passed through the security review
 Business license for company registration or articles of incorporation
*Thailand patent application documents need to be notarized
Attachments (if any)
- WIPO Publication
 - ISR/IPRP
 - Entering the Thai national phase 19/28/34/41 amended
 - Sequence Listing (PDF format and TXT format)
 - Microorganism deposit certificate and its Thai translation
 - Microorganism Survival Certificate and Thai Translation
 - Declaration of Ownership/Certification of Employment/Assignment of priority
 - Assignment for Patent Right Transfer
 - Business license for company registration or articles of incorporation
 
*Thailand patent application documents need to be notarized
Intellectual Property Office of the Ministry of Commerce of Thailand
English: Department of Intellectual Property, abbreviation: DIP
Website: Home (ipthailand.go.th)
Thailand Invention Patent Search: DIP (ipthailand.go.th)
Reinstatement of priority on grounds of "due care" accepted.
no
The initial period of protection is 6 years, which can be renewed twice, up to a maximum of 10 years.
via Paris Convention : 6 months from earliest priority date.
- via Paris Convention : 12 months from earliest priority date.
 - via Nationalization of PCT : 30 months from the earliest priority date.
 
5-8 years
no
yes. Patent applicants can change the patent type from invention to petty patent (utility model) before the patent application is granted. The converted patent application has the filing date of the original patent application.