20 years
- Bulgarian invention patent application authorization and annual fee instructions
- Is it possible to apply for a combined appearance for a Bulgarian industrial design application
- Novelty grace period for utility model applications in Bulgaria
- How long is the application period for industrial design in Bulgaria?
- Whether the Bulgarian invention patent application can be type-converted
- How long is the protection period of industrial design in Bulgaria?
- Can the priority right of Bulgarian invention patent application be restored?
- Is a utility model application in Bulgaria eligible for DAS?
- Is a Bulgarian industrial design application convertible?
- How many years is the protection period of Bulgarian invention patent application