- Grant fee: It must be paid together with the granted announcement fee within one month from the receipt of 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.
- Bulgarian utility model application authorization and annual fee instructions
- Whether the Bulgarian invention patent application can be type-converted
- Novelty grace period for patent applications for inventions in Bulgaria
- Novelty grace period for utility model applications in Bulgaria
- Is a Bulgarian invention patent application eligible for DAS
- How long does it take to authorize an industrial design in Bulgaria?
- How many years is the protection period of Bulgarian invention patent application
- What are the requirements for the Bulgarian invention patent application documents
- Bulgarian invention patent application authorization and annual fee instructions
- Which is the competent authority for utility model applications in Bulgaria?