KGK Law Firm > Sofia, Bulgaria > Firm Profile

KGK Law Firm
Bulgaria, Sofia city
5B "Tsar Shishman" Str., office KGK

Bulgaria > Intellectual property Tier 3

KGK Law Firm advises major corporations, including Carlsberg and Uber, on the full range of IP-related matters, counting patent, copyright, neighbouring rights, industrial design and trade mark issues among its steadily-expanding capabilities. Trayan Kosev leads the team and often advises on legislative amendments in the IP field.

Practice head(s):

Trayan Kosev


‘A brilliant team with brilliant expertise. What I like the most is that everyone from KGK always embraces the unusual and difficult cases. They are also ready to take up the communication with the other parties involved, at any time. Everyone is always extremely polite and willing to help.’

‘The whole team is really organised. We have been through many cases over the years and I really value the cost-saving approach that KGK has. I have always received a fair evaluation of the possible outcomes. I really appreciate that no one ever tried to do something in a way that will cost me more. Quite the opposite; KGK always saves you money.’

‘I trust KGK Law Firm with all my legal matters. KGK’s team is really organised, focused and energetic. An enormous amount of work was conducted by the IP department in a really short period of time.’

‘One of the best qualities of the team is that it is proactive and client-oriented. They don’t waste any time and always take the necessary actions. Although I am not based in Bulgaria, it is really easy to communicate with them. You feel comfortable being represented by KGK in proceedings and negotiations. What surprised me is that the team has knowledge not only of Bulgarian IP law, but also of IP legislation in other countries. KGK’s approach is effective in terms of achieving results and also in terms of money and time. I recommend KGK to everyone.’

‘Trayan Kosev is the attorney that you want to have on your side. No matter how hard it is, he always finds a solution for you. He is very trustworthy, always patient and polite, with profound knowledge in the field of IP.’

‘Trayan Kosev is a consummate problem-solver. He managed to organise our trade marks, patents, copyrights and other intellectual property in a way that made it incredibly easy to work with.’

Key clients



NIK Electronics

Sunday Media

C W Agency

Fast AI

Algera Health

Corporate Travel Bulgaria

Premio Travel Bulgaria



Neuronics Inc


Meliora Web

Smokini Restaurant

Andy Studio

Laura Catering


Edelvais Bansko

Poseidon Holidays

Building Box

New Sun Travel

In Shape 93


Diliyana Florentin

Work highlights

  • Provides advice and representation to Carlsberg Bulgaria on a wide range of matters concerning intellectual property.
  • Advised FAST AI on various IP matters related to software using artificial intelligence.
  • Advised Meliora Web on an initial sale of non-fungible tokens (NGT).

The Firm

Since its founding KGK Law Firm has had one key aim when it comes to the services that we provide to our clients – innovation. We are aware of the challenges that today’s high-tech life brings and it is our belief that traditional offering the common legal services to our clients is not enough now. We know that a great business can make a better world. Forward-thinking, innovative organizations can find the answers to today’s most difficult questions. That’s why, we find it a duty to help them succeed.
Our bold and dynamic culture means we think big and act decisively.
We provide a wide range of legal services, both covering the entire commercial and civil turnover, as well as those affecting innovative technologies and methodologies.

We provide a wide range of legal services, both covering the entire commercial and civil turnover, as well as those affecting innovative technologies and methodologies.

Areas of practice

Healthcare and Life Sciences

Artificial Intelligence is reshaping not only the IT sector, but also the world, affecting almost all areas of our daily lives and stretching into areas such as healthcare, education, transportation, etc. Artificial Intelligence is not the future – it is the present.

Like any new technology, Artificial Intelligence has its risks. Our team is dedicated to helping you take advantage of AI’s possibilities while mitigating the risks.

Contracting AI services presents a new challenge not present in traditional software and professional services agreements. Our experience and expertise in the areas of information technology and intellectual property allows us to transform your desires into actual results.

Dispute Resolution

KGK provides timely and effective protection of the rights of its clients by representing them before the Bulgarian institutional and arbitration courts and administrative bodies.

The services provided by our law firm are: representation in insolvency and liquidation proceedings; representation in disputes on commercial transactions and public procurement contracts; representation upon enforcement on security; representation upon protection of the rights of shareholders and creditors; representation in relation to concentration of business activity and unfair competition; representation in civil disputes; representation upon protection of the intellectual property rights.

Commercial, Corporate And M&A

KGK provides to both Bulgarian and foreign clients legal advice in the field of corporate and commercial law. Ever since its formation, KGK’s team has turned corporate law into one of its main areas of legal advice.

We provide services to domestic and international companies in corporate and commercial law. The consultations provided cover all the stages of business – from defining and structuring the business goals and the investment plans, through setting up commercial companies and their subsequent registration, tax, licensing, employment and regulatory matters to ongoing operational legal assistance. We also support Startups.

KGK offers the following corporate and commercial law services: choosing the right legal form depending on the client’s specific activity, establishment and registration of companies (private, public, capital, personal)consultation and drafting of Constituent acts of association, shareholder/ partner agreements, management agreements, internal rules, etc.;Structuring of capital and shares, changes in capital, capitalization of cash contributions, real estate installment, movable property and receivables, transfer of commercial enterprises and parts thereof,consultations on company management structures, supervisory and management boards, the rights, duties and responsibilities of members of executive and supervisory boards, independent directors, conflicts of interest, etc., consultation on regulatory requirements and obtaining the necessary permits and authorizations;

In recent years KGK’s М&А team has been active in its assistance to our clients in some of the significant deals for Bulgaria with international involvement.

No matter what your company type is, if you are planning your restructuring or a complex merger or acquisition, we can assist in every phase of the process – preparing a plan and structuring, drawing up a detailed due diligence, leading the negotiations on your behalf, preparing all the necessary documentation for a successful completion of the transaction, etc.

Intellectual Property

The team of KGK has extensive experience and expertise in intellectual property. Our clients receive advice and assistance, both with regard to the registration of industrial property objects before the Bulgarian Patent Office, the European Union Intellectual Property Office and the World Intellectual Property Organization, as well as related to copyright and neighboring rights.

Almost every client needs intellectual property protection.

For the production the protection of designs and trademarks. For innovative technology companies and software developers – there is copyright protection. Some of our clients are advertising agencies and artists (photographers, publishers, writers, directors, vloggers, musicians, designers, etc.), for whom copyright is the most valuable asset. Our individual approach helps to protect our clients intellectual property in the most appropriate way. We provide assistance in: problems related to copyright and neighboring rights, registration and protection of trademarks, industrial designs, patents and utility models, Consultation on domain names and trademark and domain conflicts, as well as trademark and company name conflicts, Domain name registration and protection. 

Real Estate And Construction

Investment in construction and real estate is one of the main driving forces of the Bulgarian economy. KGK represents local and foreign investors before administrative authorities, contractors and courts. Our team protects clients’ interests in real estate acquisition transactions.

 In addition to mediation, negotiation and preparation of the necessary documentation, KGK represents legal entities and natural persons in each phase until the desired result is achieved.

We also successfully represent clients in matters related to divorce, inheritance rights, division, etc., which are closely related to real estate rights and real estate.

Our team has extensive experience in complex litigation matters. In addition to representation before the court, we assist our clients in every stage of the transactions related to: construction; purchase and sale of real estate; renting; mortgage; restitution and more.


During the previous years, KGK’s team has established itself as an expert in technology, media and telecommunications. We provide advice on a range of international and regional deals, with a focus in TMT.

We consult a number of innovative projects and business models that have not been implemented in Bulgaria at the moment.

We work with both standard media service providers and innovative online media. We provide full assistance and synchronization with the relevant licensing and regulatory requirements. We also provide all kinds of advertising services that are closely related to the media.Our clients trust us about: regulation and licenses;data operations and data protection;technology implementation; contracts with suppliers and subcontractors; relations with end users; outsourcing; 


KGK provides competent assistance in the field of transport services. Our team has experience in both domestic and international transport. We provide full assistance in cases related to the Convention on the International Transport of Goods.

Some of the services we offer are: supply with appropriate transport licenses, sssistance in drawing up international cargo contracts; representation in disputes concerning the carriage of goods and delivery of goods; assistance in the preparation of forwarding contracts; preparation of necessary documentation in the field of transport.

Department Name Email Telephone
Intellectual Property Law Trayan Kosev
Intellectual Property Law Bozhana Kotarova
Intellectual Property Law Vilislava Kolarova
Intellectual Property Law Iliyana Todorova
Commercial, Corporate And M&A Stanislav Georgiev
Commercial, Corporate And M&A Vilislava Kolarova
Commercial, Corporate And M&A Stoyana Tomova
Real Estate and Construction Goran Kotsev
Real Estate and Construction Bozhana Kotarova
TMT Trayan Kosev
TMT Iliyana Todorova
TMT Vilislava Kolarova
TMT Stoyana Tomova
Healthcare And Life Sciences Trayan Kosev
Healthcare And Life Sciences Goran Kotsev
Dispute Resolution Trayan Kosev
Dispute Resolution Goran Kotsev
Transport Nikolay Popov
Number of lawyers : 4
Number of associates : 5