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The Decision of the Constitutional Court Dated 1 October 2025 and Numbered 2021/26482

The decision of the Constitutional Court (“CC”) dated 1 October 2025 and numbered 2021/26482 (“Decision”) has been published in the Official Gazette dated 6 January 2026 and numbered 33129. In preceding proceedings not forming the subject matter of the present application, the applicant, who was employed as a press operator between 24 January 2007 and 12 December 2014, filed an action for reinstatement on 30 December 2014 following the termination of his employment contract, alleging that the dismissal was not affected on the basis of a valid or just cause. The action was dismissed by the court of first instance on the ground that the termination was based on a valid reason, and the said decision was subsequently upheld by the Court of Cassation on 13 April 2016.

Zekeriya Başar Özbilen

Nimet Gizem Tamçiftçi

Yigit Alemdaroğlu

26.01.2026

Threshold Values Determining the Scope of Application of the Turkish Sustainability Reporting Standards Have Been Updated

The threshold values used to determine the scope of application of the Turkish Sustainability Reporting Standards (the “TSRS”) have been revised by the Public Oversight, Accounting and Auditing Standards Authority.

Gülbin Murat

Lara Yörük

20.01.2026

Yapay Zeka Alanında Güncel Gelişmeler

2025 sonunda ülkemizde yapay zeka hukuku alanında iki önemli gelişme gerçekleşti. Bunları aşağıda sizler için derledik.

Bora Yazıcıoğlu

Ahmet Yağız Soymen

İbrahim Yıldırım

Doğa Satı

Assoc. Prof. Dr. Nafiye Yücedağ

18.01.2026

Legal Action Types Based on In Rem Claims Concerning Immovable Property

In legal practice, the action commonly referred to as the “action for annulment and registration of title” in fact encompasses two distinct legal action types that are based on in rem claims concerning immovable property.

Mehmet Aslan

Selenay Tok Aslan

Özge Yüzerler

12.01.2026

Capital Markets Board of Türkiye 2026-Revaluation Rates and IPO Thresholds

The Capital Markets Board of Türkiye (“CMB”) updated the amounts subject to revaluation for 2026 with its decision dated 30 December 2025 and numbered 68/2461 (“Decision”), announced in the Capital Markets Board Bulletin dated 31 December 2025 and numbered 2025/68.

Dila Topuz

Berke Yalçın

Orhan Ataman

10.01.2026

A New Era in Business Opening and Operating Licences

The Regulation on the Amendment of the Regulation on Workplace Opening and Operating Licenses (the “Regulation”) published in the Official Gazette dated 11 December 2025 and numbered 33104 and entering into force on the same date, introduces significant changes to business license procedures.

Ömer Erdoğan

Gizem Esen

Kıvanç Turan

Orhan Ataman

10.01.2026

Amendment to the General Communiqué of the Financial Crimes Investigation Board (No. 5)

The Communiqué on the Amendment to the General Communiqué of the Financial Crimes Investigation Board (No. 5) (No. 31) (“Amending Communiqué”) was published in the Official Gazette dated January 7, 2026 and numbered 33130.

Zekeriya Başar Özbilen

Mert Yörüten

Gülbin Murat

08.01.2026

The Decision on the Amendment of the Decision on Pricing of Medicinal Products for Human Use

The Decision on the Amendment of the Decision on Pricing of Medicinal Products for Human Use (“Amending Decision”) has been published in the Official Gazette dated 19 December 2025. The Amendment Decision shall enter into force one day after its publication date.

Nuri Melih İnce

Lara Bayrakdar

05.01.2026

Declaratory and Injunction Actions in Unfair Competition Law

The maturation of capitalism, the resulting increase in competition, and the consequent need for legal regulations have paved the way for the development of unfair competition law.

Elif Çağla Keskinkılıç

18.12.2025

Red Bull V Commission – Abuse of Dominance and Procedural Safeguards

The European Commission (“The Commission”) has recently opened a formal investigation into Red Bull to inquire as to whether it has infringed competition rules in the energy drinks sector.

Bulut Girgin

Mustafa Polat

Filippa Angelaki

17.12.2025

The Statutory Provision Establishing the 24% Legal Interest Rate

The Constitutional Court (“Court”), pursuant to its decision dated 22.07.2025 and numbered 2024/24 E. – 2025/164 K., published in the Official Gazette dated 01.12.2025 and numbered 33094 (“Decision”)

Aksu Çalışkan Beygo Attorney Partnership (‘ASC Law’)

Kemal Tağa

Zeynep Kalem

17.12.2025

Kişisel Sağlık Verilerine Erişim Hakkında Yeni Bir Sayfa Açıldı!

Sağlık verisi işlenen hizmetlerde kişisel sağlık verilerine erişimin prensipleri Kişisel Sağlık Verileri Hakkında Yönetmelik (“Yönetmelik”) ile belirleniyor.

Bora Yazıcıoğlu

Çağatay Efe Tatar

15.12.2025

Regulation on Promotion and Information Activities in Health Services Published

The Regulation on Promotion and Information Activities in Health Services entered into force upon its publication in the Official Gazette dated November 12, 2025.

Nuri Melih İnce

Lara Bayrakdar

10.12.2025

Personal Data Protection Authority’s Principle Decision on the Recording of Turkish ID Card Photocopies in the Tourism and Hospitality Sector

The Personal Data Protection Authority (“Authority”) published its Principle Decision regarding the recording of photocopies of Turkish ID cards...

Seray Apak

Irmak Seymen Varat

Ebru Temizer

Efe Özpehlivan

10.12.2025

Practice Areas

Banking, Finance & Capital Markets

Aksu Çalışkan Beygo Attorney Partnership (‘ASC Law’)

Esin Attorney Partnership

Capital Markets Board of Türkiye 2026-Revaluation Rates and IPO Thresholds

Döviz Kredisi Yasağı Yumuşatıldı

FX Borrowing Ban Softened

Constitutional Court Rules That Statutory Interest Does Not Apply to Non-Contractual Obligations

Regulation on Venture Capital Funds to be Supported by the Ministry of Industry and Technology is Published

Kasım Ayı İndirimleri - İndirimler Hangi Fiyat Üzerinden Hesaplanacak (11.11.2025)

Declaratory and Injunction Actions in Unfair Competition Law

Red Bull V Commission – Abuse of Dominance and Procedural Safeguards

Türkiye Newsletter No.24 | Competition Market Overview

FIDIC Sözleşmelerine Türk Hukuku Penceresinden Bir Bakış

An Overview of FIDIC Contracts From the Perspective of Turkish Law

Judicial Shift in Precedent Regarding Revenue-Sharing Construction Contracts: The Principle of Reliance on the Land Registry Reinforced

Kişisel Sağlık Verilerine Erişim Hakkında Yeni Bir Sayfa Açıldı!

Personal Data Protection Authority’s Principle Decision on the Recording of Turkish ID Card Photocopies in the Tourism and Hospitality Sector

Draft Law on Measures Concerning AI-Generated Content

The Statutory Provision Establishing the 24% Legal Interest Rate

Tebligat Kanunu Madde 21 Işığında Tebliğ İmkansızlığı Halleri

Circumstances of Impossible Service in the Light of Article 21 of the Notification Law

Elektronik Ticaret ve Tüketici Hukuku Mevzuatında Yakın Zamanda Yapılan Kapsamlı Değişiklikler

Mesafeli Sözleşmeler Yönetmeliği’nde Değişiklik: Cayma Hakkında İade Masrafları Artık Tüketicilere Yüklenemeyecek

Amendment to the Distance Contracts Regulation: Consumers Will No Longer Bear Return Costs

Amendments Related to Unlicensed Electricity Generation in Türkiye

EPDK Piyasalarda Şeffaflığa ve Piyasa Bozucu Davranışlara İlişkin Yönetmelik Taslağı’nı Görüşe Açtı

Super Permit Regulation: Significant Amendments to Mining, Energy and Environmental Legislation

Threshold Values Determining the Scope of Application of the Turkish Sustainability Reporting Standards Have Been Updated

The Ethics of Gamification in the Workplace

New Framework for Corporate Sustainability Reporting Expertise Announced

Rekabet Kurumu Fintek Raporu’nun Ödemeler Ekosistemine Etkileri Bölüm X: Google Soruşturması

The Turkish Competition Authority’s Fintech Report’s Effects on the Payments Ecosystem

MASAK’ın Yeni Tebliğ Taslağı: Finansal İşlemlerde Kademeli Beyan Dönemi

Özel Sağlık Sigortaları Yönetmeliğinde Değişiklik

Amendment to the Regulation on Private Health Insurance

Legal Issues Arising in Autonomous (Driverless) Vehicles: Liability and Privacy

When 3D Trademarks and Designs Become an Antitrust Problem: The Turkish Competition Authority’s Controversial Tetra Laval Decision

Blue Washing in Design Applications: Proper Use of Masking Techniques Before the Turkish Patent and Trademark Office (TPTO)

Misleading Ads and Beyond: Key Compliance Insights for Advertisers under Turkish Law

The BR International Trade Report: November 2025

BIS Suspends "Affiliates Rule" for One Year, Effective November 10

The BR International Trade Report: October 2025

The Decision of the Constitutional Court Dated 1 October 2025 and Numbered 2021/26482

İş Yerinde Kamera ile Gözetim Faaliyeti

Biyometrik Veri İşleme Suretiyle Mesai Takibi

Yapay Zeka Alanında Güncel Gelişmeler

The Decision on the Amendment of the Decision on Pricing of Medicinal Products for Human Use

Regulation on Promotion and Information Activities in Health Services Published

The Regulation on Promotion and Information Activities in Health Services Has Been Published

Reklam Kurulundan Üst Sınırdan Ceza (05.12.2025)

Video Games: Evolving IP Considerations in 2025

On Social Media Due to Copyright Infringements, Within the Framework of Instagram Policies, Turkish Law and International Case Law

Performance-Based Payments in M&A: The Earn-Out Mechanism

Şirket Satışında Performansa Bağlı Ödeme: Earn-Out Mekanizmasının İncelikleri

Amendments to the Capital Movements Circular

Legal Action Types Based on In Rem Claims Concerning Immovable Property

A New Era in Business Opening and Operating Licences

The Constitutional Court Decision on the Tourism Operation Certificates

Haciz Müzekkeresi ile Haciz İhbarnamesi Arasındaki Hukuki ve Uygulamadaki Farklar

The Legal and Practical Distinctions Between Attachment Orders and Garnishment Notice

İpoteğin Paraya Çevrilmesi Yolu İle İlamsız ve İlamlı İcra Takip Türleri ve İpotek Kat İhtarnamesi: Hukuki ve Uygulamalı Analiz

Teknoloji Odaklı Girişimler için Teknogirişim Rozeti Uygulaması Başladı

Protecting Your Startup’s IP: Building a Chain of Title from Day One

Work Made for Hire ve Çalışan Eserleri Kavramlarının Yatırım Aşamasındaki Türk Startup’ları için Etkileri

Deferred Interest and Delay Interest Rates Are Reduced

At the Onset of the Financial Holiday…

Pillar One – Amount B will not Apply to Transactions of Distributors, Sales Agents and Commissioners Operating in Türkiye

Siber Güvenlikte İdari Para Cezaları, Usul ve Yargı Yolu

Siber Güvenlikte Sorumluluklar ve Yükümlülükler

Türkiye’de Siber Güvenliğin Yeni Yasal Çerçevesi: 7545 Sayılı Siber Güvenlik Kanunu

Regulation Amending the Regulation on the Carriage of Dangerous Goods by Sea and Cargo Securing Published

Regulation Amending the Regulation on the Carriage of Dangerous Goods by Sea and Cargo Securing Published

Regulation on Maritime and Inland Waters Navigation Notices Published

Amendment to the General Communiqué of the Financial Crimes Investigation Board (No. 5)

Beyaz Yakanın Karanlık Yüzü: Beyaz Yaka Suçlar

The Dark Side of White-Collar Professionals: White-Collar Crimes

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