In order to receive a filing date, the application for registration of a utility model must contain:

1. Application for registration with the name and address of the applicant and the name of the utility model for which registration is requested.
2. Description of the utility model.
3. Drawings when needed..
4. One or more claims.

In order to initiate the procedure in the Patent Office, in addition to the obligatory documents, the application must also contain:

• Declaration of actual inventors, which applies where the applicant is different from the inventor.
• Declaration for micro and small enterprise under the Small and Medium Enterprises Act, when the applicant is such an enterprise, according to the model of the Executive Agency for Promotion of Small and Medium Enterprises; in this case the applicant enjoys a 50% discount when paying the application fees.
• Priority certificate when an earlier convention priority has been declared in the application.
• Power of attorney of an industrial property representative, when authorized.
• Document for paid fees for application and verification.

The necessary documents, as well as detailed instructions for the procedure for registration of a utility model can be found on the website of the Patent Office.

The application for registration of a utility model shall be filed directly with the Patent Office, by fax, by e-mail, through a postal operator or electronically through the Portal of the Patent Office.

Information on utility models is published in the Official Bulletin of the Patent Office after registration. The documents in connection with the registration, for which a publication has been made, can be used in the Central Patent Library, after applying in the reading room, and copies of them can be obtained.

Changes to the application may be made at the initiative of the applicant at any time during the registration procedure, provided that they do not go beyond the initial disclosure and after payment of the relevant fee.

The issued security document is valid only on the territory of the country in which it was issued, ie. in this case only on the territory of Bulgaria.

The maximum period of validity of the registration of the utility model is ten years from the date of submission of the application. Initially, the registration is for 4 years and it can be renewed twice for 3 years. Renewal is made upon submission of a request by the holder, accompanied by a document for paid fee in the last year of validity of the registration.

The due fees can be paid at the cash desk in the Office, by bank transfer, by standard bank transfer, as well as by electronic banking. The bank account is indicated on the website of the Office.

The issuance of a duplicate is part of the administrative services provided by the Patent Office. The application shall be filed in free form or in a form of the Patent Office by the holder of the registration, by paying a corresponding fee under the Tariff for fees collected by the Patent Office of the Republic of Bulgaria.