PCT National phase in Bulgaria


PCT national phase entry in Bulgaria - KTpatent.com

Entering PCT national phase in Bulgaria must take place within 31 months following the filing date of the PCT application.

If priority has been claimed, then the 31 month period is calculated as from the earliest priority date of the PCT application.

Iaddition to the non-extendable 31 month period that the applicant must comply with, there are other indispensable steps that must fulfil the provisions under the Bulgarian Law on Patents.


At this point, the PCT application transforms into an independent application for Bulgarian patent or Utility model registration in Bulgaria which enjoy the date of filling and/or priority date of the international patent application.


These essential steps can be summarized as follows:


  • Appointing a Bulgarian Patent Attorney
  • Translation of the entire specification of the PCT application into Bulgarian
  • Filing of the relevant filing documents concerning PCT national application in Bulgaria, as well as the translated PCT patent specification into Bulgarian
  • Paying the priority (if applicable), filing, search and examination fees.
  • Monitoring numberless deadlines under the national patent law

How may we help?


Our highly-experienced Bulgarian Patent Attorneys are always at your disposal when it comes to entering PCT national phase in Bulgaria. We are competent to handle applications for PCT national entry from all technical fields. Our knowledge and qualifications in the patent domain help us prosecuting your PCT entry in Bulgaria in a more effective and legally binding way.


Additionally, we are able to provide high-quality and cost-effective patent translation service into Bulgarian. Not only are our dedicated patent translators able to conduct patent translations of the highest quality, but also technically accurate. Our translators are Bulgarian native speakers who are competent to prepare patent translations from English, German and French into Bulgarian with regard to inventions from all technical fields.

Need assistance?


EQE qualified European Patent & Trademark Attorney  |  Bulgarian Patent & Trademark Attorney

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