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
 
Bulgarian Patent Office
English: Bulgarian Patent Office, abbreviation: BPO
Website: Патентното ведомство на Република България (bpo.bg)
Bulgarian invention patent search: BPO Online - portal.bpo.bg
The BPO conducts formality examination of design patent applications.
no
2-5 years
It is protected for 10 years from the date of application, and can be renewed for 3 times, each time for 5 years, with a maximum protection of 25 years.
A 12-month novelty grace period is available if:
- The applicant authorizes others to use
 - manifest misuse by a third party
 
- Grant fee: It will be paid together with the granted announcement fee one month after receiving the granted notice, and the payment will be doubled if it is overdue.
 - Annuity: The renewal fee payment period is the corresponding date of the application date in the year, and can be paid within the last year of the current validity period. Payment can still be made within 6 months from the overdue date, subject to a penalty.
 
4-6 months
A 12-month novelty grace period is available if:
- The designer, his legal successor, or a third party arising from the information or activities of the designer or his legal successor
 - Third party that harms the interests of the designer
 
Filing Language: Bulgarian Necessary documents:
- Exterior Design Picture (Six Views)
 - A Brief Description
 
Attachments (if any):
- Power of Attorney
 - Certified Priority Document
 - Declaration of Ownership/Certification of Employment/Assignment of priority
 - Assignment for Patent Right Transfer
 - Application fee payment certificate