Stock Intellectual Property Services


Esentepe Mahallesi
Büyükdere Caddesi 173, Şişli 34394

Tel:+90 212 324 31 00
Fax:+90 212 324 31 18

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Key contacts:

Vice-Chairman: Ömer Dündar
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Head of Litigation Department: Esra Ter
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Head of Patents Department : Bahadır Gürsoy
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Co-Director, Trademarks Department: İpek Yıldız Esiner
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Co-Director, Trademarks Department: Merve Macit
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Director, Litigation Department: Müge Kurtbeyoğlu Uzgör
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Director, Patents Department: Pınar Şen
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Firm Profile 

For over 135 years, Stock has been the leading name in Türkiye in all aspects of IP law. The firm is also active in the Turkish Republic of Northern Cyprus with a practice spanning approximately half a century. Stock’s pioneering work is built on its strength to amalgamate a deep experience with technical knowledge accompanied by a keen business acumen. Its passion for excellence and innovation equips it to stay ahead and bring optimum, cutting-edge and timely solutions to the issues raised in a fast-changing and interconnected world.  


Established in 1887 by Mr HW Stock, a patent agent originally from the United Kingdom, Stock is the oldest firm in Türkiye in the IP field.  

The firm was registered with the Istanbul Chamber of Commerce in 1937 and changed its name to HW Stock Successors, Douglas G Whittall and Co in the 1940s, to Stock Industrial Property Services AS in 1984 and finally to Stock Intellectual Property Services AS in 2020. 

Today, Stock is a family firm with five family members actively engaged in daily work. 


Stock adopts a holistic approach and assists its clients in every step of a case with respect to all aspects of intellectual property. With a strong team of over 35 IP practitioners, formed of highly qualified registered trademark and patent agents, European patent agents as well as attorneys at law, Stock handles all cases with utmost care applying its knowledge and sophistication to make sure all possibilities are considered, risks are mitigated and all phases of a case from the very first to the last are handled pre-eminently.   


Stock represents its clients before all relevant bodies, such as:

  • the Turkish Patent and Trademark Office;
  • the Ministry of Culture;
  • the Turkish Domain Name Registrar;
  • the World Intellectual Property Organisation; 
  • the Office of the Registrar in the Turkish Republic of Northern Cyprus; and
  • the Ministry of Agriculture and Forestry; and
  • the customs authorities.

The firm is specialised in the following practice groups: 

  • trademarks;
  • designs;
  • patents;
  • designs;
  • domain names;
  • copyrights; and
  • plant variety rights. 

Seamless integration of the firm’s enforcement and litigation skills along with deep-rooted prosecution know-how makes it unique in formulating filing and registration strategy. 

As a full-service IP firm, Stock collaborates with its clients diligently to understand their needs and tailor a long-term, holistic IP management strategy taking the interaction of all IP rights into account. The firm also assists its clients in connection with litigation matters through its litigation arm. 

According to the data obtained from the Official Trademarks Bulletins of the Turkish Patent and Trademark Office, Stock took the top spot in terms of trademark filing in the name of foreign entities both in 2021 and between January and August 2022.  

Client relationships 

By virtue of its longstanding relationships with its clients built over decades, Stock has a profound understanding of its clients’ needs and works with them as a part of their team to protect and manage their IP rights effectively. 

From emerging enterprises to established companies of a wide range of sectors, Stock’s clients are in good hands and their contentment, continued trust and confidence is Stock's best accolade. Sectors Stock is active in include but are not limited to:

  • fast-moving consumer goods;
  • fashion and luxury;
  • life sciences;
  • engineering;
  • internet and online;
  • technology;
  • medicine;
  • sports, entertainment and media;
  • automotive;
  • tobacco;
  • cosmetics; and
  • food and beverages.


Stock and its practitioners have been ranked among the top-tier IP firms and practitioners in Türkiye by the most reputable rankings of the world including WTR, IAM and MIP IP Stars

As of 2022, Stock has been ranked in the prosecution and strategy and enforcement and litigation categories by WTR; in the prosecution category by IAM; and trademark and patent prosecution and trademark contentious categories by MIP IP Stars. The firm has received similar awards in previous years. 


Through its memberships in INTA, EPI, AIPPI, ITMA, FICPI and ECTA, Stock collaborates with other agents all over the globe and strives to contribute to IP law addressing the current issues both in Türkiye and around the world.