- 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
- How many years is the protection period of Bulgarian invention patent application
- Is a Bulgarian industrial design application convertible?
- Whether the Bulgarian invention patent application can be type-converted
- Features of the Bulgarian invention patent application process
- How long does it take for a utility model application to be granted in Bulgaria?
- What are the requirements for the Bulgarian industrial design application documents
- Is a Bulgarian utility model application convertible?
- Features of Bulgarian Utility Model Patent Application Process
- Novelty grace period for patent applications for inventions in Bulgaria
- How long is the PCT period for Bulgarian invention patent application