To invent, you need a good imagination and a pile of junk.
Thomas Edison

Inventions and utility models (Bulgaria)

This object is registered:

  • To benefit from exclusive use of technical solution while introducing it to the market
  • To obtain reliable protection against unfair competition
  • For effective advertising
  • To include the patent into the statutory fund as an intangible asset
  • To use your intangible asset as a pledge
  • For the customs purposes - to ensure effective protection against import of counterfeit goods

Service area:
Schedule of charges
Invention/utility model is the result of human creativity in any field of technology.

Invention protects following objects: product (device, substance, microorganism strains, cell culture), process (method), application of a known technical solution for a new purpose.

Criteria of patentability for the invention: novelty, inventive step, and industrial applicability of the claimed technical solution. Inventive step criterion is met if a technical result achieved by adding new features to the previously known technical solution is not obvious for a specialist.

The object of protection under utility model patent in most countries with some exceptions can be a product only.

Criteria of patentability for the utility model: novelty and industrial applicability of the claimed technical solution. In some countries however, an inventive step is also checked. For the list of countries where protection for utility models can be obtained click here.

Invention/utility model registration is necessary to obtain the state-guaranteed privileges to use, including the enforcement of the right to prohibit the use of such intellectual property asset by third parties.

Both individuals and/or legal entities may be the holders of the property rights for invention/utility model. Property rights for invention/utility model may simultaneously belong to several legal entities and/or individuals. However, non-property rights remain with the author / authors of invention/utility model, it can’t be alienated and is subject to permanent protection.

The title of protection for registration of the invention is usually a patent. When registering a utility model in some countries certificate is granted.

The territory covered by the protection of the registered invention/utility model is always indicated in the title of protection. It may include one or several countries.

Invention is valid during 20-25 years, while for utility model validity term is 10-15 years depending on the country (if relevant official fees are paid periodically).

Important to remember: it’s better to invest into protection of your original invention/utility model before goods are introduced into the market than to spend significantly more in future to protect your products from unfair competitors and intellectual property dealers.

The patents for inventions are granted in Bulgaria on the basis of substantive examination (examination system). This means that Bulgarian Patent Office(BPO) examines the application for compliance with the formal and absolute grounds of patentability. Only a product can become object of the utility model.

Patents for utility models are granted under the responsibility of the applicant (registration system) on the basis of a formal examination. Novelty is not considered violated if the applicant has disclosed his technical solution not earlier than 12 months prior to submitting his application.

The package of documents required for filing an application includes the description and claims of an invention/utility model, which are usually formed by a patent attorney.

The maximum validity term of invention patent is 20 years, while for the utility model - 10 years. Invention patent maintenance fee must be paid annually; utility model maintenance fee must be paid twice – at the end of 4th and 7th years of maintenance.

The Bureau’s office in Sofia files applications to the BPO directly and controls all stages of prosecution under Bulgarian procedure.

You need to provide

  • A full applicant’s name and address
  • A full author’s name and address
  • An invention/utility model title
  • Report on the patent search
  • Invention/utility model description
  • A power of attorney
  • Payment of official and attorney fees

Registration stages

  • from 30 daysPreparation and submission of documents
  • 3-4 yearsInvention examination
  • 3 monthsUtility model examination
  • 0,5-1,5 monthsPublication and grant of a patent
  • up to 2 monthsRenewal of patent

Titles of protection

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