Firm Profile > Öncel, Aydin & Uygun Attorney Partnership > Istanbul, Turkey

Öncel, Aydin & Uygun Attorney Partnership

Employment Tier 3

Flexible and solution-orientedÖncel, Aydin & Uygun Attorney Partnership  has particular experience advising on collective dismissals, negotiations with the unions, restructuring and press labour law. Buğra Aydın and Erman Öncel co-head the team. A recent highlight includes advising GlaxoSmithKline on employment litigation matters including re-employment lawsuits by former employees; it is also advising the company on its disciplinary procedures. Other clients include Al Jazeera Media Network, Michael Page and Geberit Group.


The firm

Öncel, Aydin & Uygun Attorney Partnership was founded in 1973 under the name ‘Öncel Law Firm’ by attorney E Sefa Öncel. Since its inception, Öncel Law Firm has become a highly regarded law firm specialising in litigation, debt collection, administrative law, corporate and commercial law. After undergoing restructuring in 2012, Öncel Law Firm changed its name to Öncel, Aydin, Duman & Uygun Attorney Partnership with the addition of four other second-generation partners (Erman Öncel, A Bugra Aydin and Cemal Umut Uygun) and expanded its practice in the international arena. Since its restructuring, Öncel, Aydin & Uygun Attorney Partnership has successfully established a broad client base by including numerous prestigious local and international clients from various sectors in its portfolio.

Areas of practice

Öncel, Aydin & Uygun Attorney Partnership provides support to local and international clients in all types of legal matters that they may encounter in Turkey or abroad. The firm has broad experience in the areas of mergers and acquisitions, international commercial law, media and entertainment law, IT and telecommunications law, corporate law, labour law, contracts, competition law, real estate law, litigation and debt collection. Moreover, the firm benefits from the expertise of its counsels Saadet Öncel, who provides her experience and expertise as a retired chief administrative court judge in the areas of administrative and tax litigation, and Prof Dr Leyla Keser Berber, who is an associate professor at Istanbul Bilgi University Faculty of Law and director of the Istanbul Bilgi University Information and Technology Law Institute.

In recent years, Öncel, Aydin & Uygun Attorney Partnership has undertaken many complex works ranging from the liquidation of one of Turkey’s oldest media and entertainment companies to the capital restructuring of a Turkish subsidiary of a multinational corporation in the amount of TRY140m. The firm has also represented its clients in their M&A, distributorship, sales, brokerage and consultancy activities in numerous countries such as Qatar, Mozambique, Ghana, USA, Brazil, Kazakhstan, Gabon, Azerbaijan, Tunisia, Algeria, Morocco, Saudi Arabia, Iraq, Russia, Germany and Afghanistan.


Department Name Email Telephone
Head of M&A and Corporate Departments Erman Öncel
Head of Antitrust, Media Law and Employment Departments A. Buğra Aydın
Co-head of Litigation and Employment Departments - Head of Debt Collection Department Cemal Umut Uygun
Co-head of Litigation and Head of Administrative Law Department E. Sefa Öncel
Photo Name Position Profile
Av A. Buğra Aydın, LL.M.  photo Av A. Buğra Aydın, LL.M.
Av Melikşah Duman, LL.M.  photo Av Melikşah Duman, LL.M.
Av E. Sefa Oncel  photo Av E. Sefa Oncel
Av Erman Oncel, LL.M., Esq.  photo Av Erman Oncel, LL.M., Esq.
Av Cemal Umut Uygun  photo Av Cemal Umut Uygun
Number of lawyers : 15
New York Bar
Istanbul Bar and Turkish Bar Association