6 months before the filing date/priority date.
1 year
- Authorization Fee: None
- Annuity: payable year by year starting from the 6th year from the date of application
- 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.
It is protected for 5 years from the date of application, renewed every 5 years, and can be renewed twice, up to a maximum of 15 years.
no
via Paris Convention : 6 months from earliest priority date.
Inventions under the via Paris Convention : 12 months from the earliest priority date.
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.