About
Biography
Experience
Efser Zeynep Ergun is a partner at ZESA Attorney Partnership in Istanbul. She has extensive experience in representing and advising clients in investigations brought forward by the Competition Board. She provides legal advice to Turkish and international companies across a broad range of sectors, including telecommunications, healthcare (pharmaceuticals and medical devices), real estate, energy, aviation and shipping, automotive and spare parts, investment funds, private equity, tourism, and food and beverages.
Specialty
Efser Zeynep Ergun specializes in competition law aspects of all commercial transactions. Her expertise includes mergers and acquisitions, licensing agreements, cooperation agreements, non-compete clauses, distribution and supply agreements, compliance, competition audits, preparing notification forms for national and global mergers and acquisitions, and competition litigation cases.
Education
Efser Zeynep Ergun holds an LL.M. in European Law from the Institut d’etude Europeenne of Universite libre de Bruxelles and graduated from Ankara University School of Law.
- Efser Zeynep Ergun is recognized as a partner at ZESA Attorney Partnership, specializing in competition law aspects of commercial transactions, with her profile featured on the firm's official website highlighting her expertise and leadership role within the firm's antitrust practice ZESA Attorney Partnership - Efser Zeynep Ergun.
Law Firm
ZESA Attorney Partnership
Efser Zeynep Ergun featured in

Practice Area
Distribution & Vertical Agreements in Turkey 2026: Practical Compliance Guide for Manufacturers & Distributors
2 Sept 2026

Practice Area
Competition Law Risks for Pharmaceutical & Medical Device Companies in Turkey (2026): What In‑house Counsel, Investors & Compliance Teams Need to Know
27 Aug 2026

Practice Area
How to Run a Competition Clean-up for Private Equity Exits in Turkey (2026): Step-by-step Guide
20 Aug 2026

Practice Area
How to File a Complaint with the Turkish Competition Authority (TCA): Step‑by‑step
7 Aug 2026

Practice Area
No‑poach and Wage‑fixing Compliance in Turkey (2026): Article 4, TCA Fines, HR Data‑sharing Risks & Safe Clauses
31 Jul 2026

Practice Area
When to Notify a Joint Venture in Turkey (2026): Practical Guide for Investors, JV Partners & In‑house Counsel
24 Jul 2026
Frequently Asked Questions
What is Efser Zeynep Ergun's professional role?
Efser Zeynep Ergun is a partner at ZESA Attorney Partnership in Istanbul, specializing in competition law and representing clients in investigations by the Competition Board.
In which sectors does Efser Zeynep Ergun provide legal advice?
She provides legal advice across sectors such as telecommunications, healthcare, real estate, energy, aviation and shipping, automotive, investment funds, private equity, tourism, and food and beverages.
What are Efser Zeynep Ergun's areas of expertise?
Her expertise includes mergers and acquisitions, licensing, cooperation agreements, non-compete clauses, distribution agreements, compliance, competition audits, and litigation related to competition law.
What educational qualifications does Efser Zeynep Ergun have?
She holds an LL.M. in European Law from the Universite libre de Bruxelles' Institut d’etude Europeenne and graduated from Ankara University School of Law.
Does Efser Zeynep Ergun have a profile on her firm's website?
Yes, her profile highlights her expertise and leadership role within ZESA Attorney Partnership's antitrust practice, and it can be viewed on their official website.
