Sezin Elçin

Bringing a wealth of experience spanning 23 years in roles at the Turkish Competition Authority and in private practice, Sezin represents clients in all types of competition/antitrust matters.

Before founding CoPartners, Sezin led the Competition/Antitrust practice at the international law firm, White & Case in Turkey for 12 years (2011-2023). Previously, she worked for the Turkish Competition Authority for 10 years (2001-2011) as a senior case handler/expert in competition law.

Sezin has handled hundreds of merger, acquisition, and joint venture cases to date, both on the Turkish Competition Authority side as a case handler and on the law firm side, acting as counsel. She regularly conducts multi-jurisdictional merger filing assessments and foreign direct investment (FDI) analysis and acts as coordinating counsel for merger filings in multiple jurisdictions.

She has been involved in numerous landmark competition investigations in Turkey, successfully representing investigated parties before the Turkish Competition Authority. Sezin advises clients on defence strategies and optimal outcomes through leniency applications, settlement negotiations and commitment mechanisms. She also provides guidance on managing antitrust risks in day-to day operations, designing and implementing competition compliance programmes, and delivering tailored competition law training to clients across various industries.

Throughout her career, Sezin has consistently been recognised by international directories including The Legal 500, Chambers & Partners, Global Competition Review and Who’s Who Legal, referring to her as the “go-to” advisor for companies facing antitrust issues in Turkey. Known as “pragmatic, solution-oriented and business-minded”, clients describe Sezin as “a spectacular competition specialist and standout professional”, “a hands-on partner, always reachable and quick to rise to the occasion when needed. She harmonizes her top-notch antitrust knowledge with her business acumen”.