no
6 months before the filing date/priority date.
no
20 years (Bangladesh Patents Act 2022)
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.
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)
1 year
no
- 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.