Inventions under the via Paris Convention : 12 months from the earliest priority date.
no
- Authorization Fee: None
- Annuity: payable year by year starting from the 6th year from the date of application
DPDT conducts formality examination and substantive examination of invention patent applications. The substantive examination starts automatically, and the applicant does not need to file a separate request for substantive examination. If the conditions for patent granted are met, the patent application will enter the public stage. If there is no objection within 4 months after publication, the patent application will be authorized.
2 years
via Paris Convention : 6 months from earliest priority date.
- Grant fee: The applicant shall pay the granted official fee within 2 months after receiving the granted notice.
- Annuity: It needs to be paid year by year starting from the fifth year from the application date.
6 months before the filing date/priority date.
no
Filing Language: English
via Paris Convention Necessary documents:
- Abstract
- Abstract Drawing
- Claim
- Specification
- Drawing
Attachments (if any)
- Power of Attorney
- Certified Priority Document
- Sequence Listing (PDF format and TXT format)
- Certificate of Deposit of Microorganisms and its Bengali Translation
- Certificate of Microorganism Survival and its Bengali Translation
- Priority certificate/Certified Priority Document English translation
- 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
- translator statement
*Bangladesh patent application documents need notarization
20 years (Bangladesh Patents Act 2022)