no
If the patent is disclosed due to the display at the exposition or unintentional disclosure, the novelty grace period can be enjoyed within 6 months before the filing date/priority date.
6 months before the filing date/priority date.
Bangladesh Patent and Trademark Office
English: Department of Patents, Designs and Trademarks Ministry of Industries, abbreviation: DPDT
Website: Department of Patents, Designs and Trademarks (DPDT)
- Authorization Fee: None
- Annuity: payable year by year starting from the 6th year from the date of application
DPDT only conducts formality examination of design patent applications, not substantive examination.
no
- 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.
1 year
20 years (Bangladesh Patents Act 2022)
Inventions under the via Paris Convention : 12 months from the earliest priority date.