Patent Application Encyclopedia

yes

no

• via Paris Convention : 6 months from earliest priority date.
• Hague Agreement route: 6 months from earliest priority date.

Yes, an invention can be converted into a utility model, and the converted application has the filing date of the initial application.

• Grant fee: The applicant shall pay the patent announcement fee and granted fee within 3 months after receiving the patent granted decision.
• Annuity: payable year by year from the first year onwards from the application date. The first annual fee should be paid within 4 months after the patent grant. If the annual fee is overdue, the payment can be postponed within the 6-month grace period after the expiration of the period, and a 50% penalty must be paid at the same time.

Grant fee: The applicant should pay the granted fee, registration fee and first renewal fee within 2 months after receiving the granted decision.

Annuity: From the third year onwards from the date of application, it shall be paid year by year. The renewal fee should be paid within the last year of the current 5-year validity period, and the annual fee can be paid within a grace period of 6 months if the annual fee is overdue, and a 50% penalty must be paid at the same time.

Formal examination and substantive examination are required.

no

1-6 months

not applicable.

• Grant fee: The applicant shall pay the granted registration fee within 3 months after receiving the notification of granted decision.
• Annuity: Three annual fees shall be paid in the 3.5th year, 7.5 years and 11.5 years from the date of granted, and the payment may be postponed within 6 months after the overdue period, but 25% of the annual fee of the current year shall be paid at the same time as a penalty.

• Grant fee: The applicant shall pay the granted fee within 2 months after receiving the granted notice.
• Annuity: pay year by year starting from the first year from the application date. If the annual fee is overdue, it can be paid within a grace period of 6 months, and a 20% late fee will be paid at the same time.

20 years

yes

20 years (Bangladesh Patents Act 2022)

Bulgarian Patent Office

English: Bulgarian Patent Office, abbreviation: BPO

Website: Патентното ведомство на Република България (bpo.bg)

Bulgarian invention patent search: BPO Online - portal.bpo.bg

4-6 months