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.
no
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.
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via Paris Convention : 6 months from earliest priority date.
no
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)
no
Inventions under the via Paris Convention : 12 months from the earliest priority date.
DPDT only conducts formality examination of design patent applications, not substantive examination.
2 years