OUR SERVICES
  1. Trademark registration 

    Mark is a sign that is capable of distinguishing the goods or services of one person from those of other persons and...

  2. Bulgarian patent application

    Patents shall be granted for inventions in any field of technology, which are new, involve an inventive step and are susceptible of industrial application...

  3. European patent validation in Bulgaria

    A granted European Patent does not automatically provide exclusive rights to its proprietor in all of the designated contracting...

  4. PCT national phase in Bulgaria

    Entering PCT national phase in Bulgaria must take place within 31 months following the priority date of the PCT application. At this point...

  5. Utility model registration

    Legal protection for utility models shall be granted through registration with the Patent Office. Utility models shall be registered...

  6. Industrial design registration in Bulgaria

    A design means the appearance of the whole or a part of a product resulting from the specific features of the shape, lines...

KT Patent – Bulgarian patent attorneys, European patent & trademark attorneys

Established in 1993, Mr. Kostadin Tahtadjiev's patent bureau is one of the leading Industrial Property offices in Bulgaria. Dipl. Eng. Kostadin Tahtadjiev is a Bulgarian patent and trademark attorney, registered under No 1 in the list of industrial property representatives before the Bulgarian Patent Office and a European patent attorney practising Industrial Property for over 35 years. He has gained considerable experience over time teaming up and networking with globally acclaimed IP law firms and foreign multinational companies.

The bureau’s emphasis is on preparation, filing and prosecution of Bulgarian patent applications, European patent applications, European Patent Validation in Bulgaria, PCT applications, PCT national phase in Bulgaria, utility model registrations, trademark registrations and industrial design registrations, as well as the maintenance and defense of the obtained industrial property rights for Bulgarian and foreign clients. We attach great importance to repeatedly analyzing and optimizing strategies in industrial property rights concerning the relationship between costs and benefits for our clients in particular. In the protection of industrial property, technical qualification and concrete argumentation count above all else. Our identification with the requirements of our clients reveals itself in detail, showing our technical competence and individuality derived from the personality of each member of our team.

Our team is trained to offer patent prosecution advice in all traditional technical fields as well as in those of the most recent technologies from mechanics to electronics and telecommunications, from chemistry and pharmaceutics to biotechnology, from the topography of semiconductors to the patent protection of software.