- via Paris Convention : 12 months from earliest priority date.
- via Nationalization of PCT : 31 months from earliest priority date.
- Whether the Bulgarian invention patent application can be type-converted
- Is a Bulgarian invention patent application eligible for DAS
- Is a Bulgarian industrial design application eligible for DAS?
- Features of the Bulgarian invention patent application process
- Is it possible to apply for a combined appearance for a Bulgarian industrial design application
- Novelty grace period for patent applications for inventions in Bulgaria
- Features of Bulgarian Utility Model Patent Application Process
- Bulgarian invention patent application authorization and annual fee instructions
- How long is the protection period of industrial design in Bulgaria?
- How long is the PCT period for Bulgarian invention patent application