Is a Bulgarian utility model application convertible?

no

A novelty grace period of 6 months is available if:

• The applicant or the original right holder obviously abused the
• Exhibited by the applicant or the original right holder at an official or officially recognized exhibition

yes. For an invention with the same subject matter, the applicant may file a patent type conversion request within 2 months from the date of receiving the patent application decision, but no later than 10 years from the application date, and change the patent type from invention to utility model .

A 12-month novelty grace period is available if:

• The applicant authorizes others to use
• manifest misuse by a third party

• Grant fee: The applicant shall pay the granted fee within 3 months after receiving the granted notice.
• Annuity: pay year by year from the first year of the application date, and should be paid before the last day of the month of the application date at the latest, not exceeding one patent year, and the annual fee can be paid within a grace period of 6 months if it is overdue, and paid at the same time 200% late fee.

The initial protection period is 4 years, which can be extended for two consecutive three years, and the maximum protection period is 10 years.

4-6 months

• via Paris Convention : 12 months from earliest priority date.
• via Nationalization of PCT : 31 months from earliest priority date.
• Validation of European Patent in EPO member states: 3 months from the date of European patent grant