Tunahan Sefa Aydın
Biography
Tunahan Sefa Aydın works as an associate and trademark attorney at Erdem & Erdem Law Office. His practice primarily focuses on commercial and corporate law, dispute resolution, intellectual property, enforcement and bankruptcy law, and administrative law. He advises and represents domestic and international clients in litigation and other legal matters.
He has experience in disputes arising from shareholder relations, general assembly resolutions, dealership and distribution agreements, as well as recognition and enforcement of foreign judgments and arbitral awards, and challenges against administrative and regulatory decisions. His practice also includes international commercial disputes, arbitration-related matters, commercial contracts, corporate transactions and shareholder arrangements.
Tunahan Sefa Aydın graduated from Istanbul University Faculty of Law and is pursuing an LL.M. in Private Law at Istanbul University, focusing his thesis on interest applicable to monetary debts in commercial transactions.
He previously served as a research assistant in the Department of Commercial Law at Istanbul Medeniyet University.
Service Areas
Representative Matters
- Contributing to arbitration matters, including conducting legal research on contractual and procedural issues, reviewing case records, and assisting in the preparation of written submissions.
- Representing domestic and foreign clients in a wide range of disputes related to the law of obligations, commercial law and administrative law before the civil and administrative judicial authorities.
- Representation of domestic and foreign clients in lawsuits for annulment of general assembly and board of directors resolutions, lawsuits for obtaining information and special audit and other lawsuits arising out of shareholding.
- Representation of domestic and foreign clients in the collection of receivables within the scope of proceedings by way of attachment and bankruptcy, as well as the dismissal of objections to proceedings.
- Conducting litigation processes of clients in disputes arising from intellectual and industrial property law.
- Annulment of administrative sanctions imposed on clients, conducting administrative objection and application processes.
- Representation of domestic and foreign clients in the annulment of the decisions of the Competition Board.
- Representing of clients on recognition and enforcement of foreign court judgments and arbitral awards for enforcement in Türkiye.
- Representation of clients in commercial and administrative lawsuits in accordance with the legislation applicable to port businesses.
- Providing legal advice to domestic and foreign clients at the pre-litigation stage in a wide range of disputes related to the law of obligations, commercial law and administrative law.
- Reviewing agency, dealership and sole dealer agreements, providing legal consultancy and settlement services in disputes arising from these relationships.
- Providing legal advice to clients in disputes arising from intellectual and industrial property law.
- As a trademark attorney, conducting trademark registration, objection to publication and trademark cancellation processes for domestic and foreign clients.
- Providing administrative application and consultancy services for the issuance of permits, licenses, registrations and such administrative transactions of clients.
Education
Istanbul University, Master of Laws, Private Law (Thesis Stage)
Istanbul University Faculty of Law
Aydın Social Sciences High School
Publications
- The Personal Scope of Shareholder Voting Disqualification: An Assessment in the Context of Family Companies, Congress on Family Companies from All Legal Perspectives, 1 October 2026 (Co-author: Dr. Rifat Cankat)
- Belirli Süreli Dağıtım Sözleşmelerinin (Bayilik, Tek Saticilik, Franchise) Feshinde Mahrum Kalınan Kâra Esas Sürenin Belirlenmesi (Determination of the Period for Loss of Profit in the Termination of Fixed-Term Distribution Agreements (Dealership, Exclusive Distributorship, Franchise)), İMÜHFD, March 2026 (Co-author: Asst. Prof. Dr. Ekrem Solak).
- Bankruptcy Proceedings for Debt Collection: “Pay It or Go Bankrupt”, Chambers & Partners, February 2025 (Co-author: Alper Uzun)
- Employer’s Representative and Job Security: An Evaluation in the Light of Decisions of the Court of Cassation, Erdem & Erdem Newsletter, August 2024
- An Example of Trademark Infringement: The Use of a Trademark as a Business Name, Erdem & Erdem Newsletter, April 2024
- The Distinctive Nature of Administrative Trial Procedure from Civil Procedure: The Ability of the Intervenor to Apply for Legal Remedy Independently of the Party, Erdem & Erdem Newsletter, December 2023
- Bir Olağan Dışı Vergilendirme Örneği: Ek Vergi Düzenlemesi Üzerine Bir Değerlendirme (An Example of Extraordinary Taxation: An Evaluation on the Additional Tax Regulation), Galatasaray Üniversitesi Hukuk Fakültesi Dergisi, June 2023 (Co-author: Canan Doksat)
