Firm Profile > Erdem & Erdem Law Office > Istanbul, Turkey

Erdem & Erdem Law Office
Ferko Signature, Büyükdere Caddesi
No. 175, Kat. 3
34394 Esentepe - Sisli, Istanbul

Dispute resolution Tier 1

Erdem & Erdem Law Office is active in a varied mix of litigation, including cases arising from post-M&A disputes, breaches of contract, partnerships, joint ventures, real estate contracts, unfair competition and disagreements between shareholders. Another bedrock of the practice sees the firm handling domestic and international arbitration proceedings, which includes representing clients in ad hoc arbitral tribunals. The firm acts for clients in sectors such as energy, mining, manufacturing, transportation and telecoms, among others. Ercüment Erdem is a name to note in the group, which is jointly led by Suleyman Sevinc and Piraye Erdem.


‘The team is composed of associates and partners with sufficient legal competence, skill of legal analysis and communication regarding the services required of them’.

‘Süleyman Sevinç is a very experienced and competent professional’.

Banking, finance and capital markets Tier 2

Erdem & Erdem Law Office covers a wide range of banking transactions for clients, including those centred on construction finance, acquisition finance and project finance. Its team is also sought out for advice on debt and equity capital markets transactions; areas of expertise include high-yield debt, private placements, IPOs and derivatives transactions. Clients include corporate issuers, private equity funds and financial institutions. The team is jointly led by Ozgur Kocabasoglu and Ercüment Erdem.

Key clients

Akbank T.A.Ş.

Garanti Bankası A.Ş.

İş Bankası A.Ş.

Teknik Aluminyum

Yılport Holding

Trakya Cam Sanayi A.Ş.

Türkiye Şişe ve Cam Fabrikaları A.Ş. (Şişecam)

Paşabahçe Cam Sanayi ve Ticaret A.Ş.


China Pengfei Group

Competition Tier 3

Erdem & Erdem Law Office advises clients on European Union and Turkish competition law issues. The scope of its practice includes behavioural investigations, compliance programs, contracts and distributorship systems, and commercial regulation. It generates work from clients in sectors such as food and beverages, health, FMCG, retail, steel, construction and energy. Mert Karamustafaoglu, who was promoted to partner, jointly leads the team with Ercüment Erdem.


‘Their communication is strong and results oriented’.    

‘A well-established team, often instructed by clients for competition investigations, and also knowledgeable in a broader spectrum of competition work’.

‘Erdem & Erdem is accessible, cost-effective and prompt’.

‘Mert Karamustafaoğlu is a former specialist at Turkish Competition Authority and provides insight knowledge of the Competition Authority and how its decisions are made’.

Key clients

Türkiye Şişe ve Cam Fabrikaları A.Ş. (Şişecam)

İş Bank (Türkiye İş Bankası) – Turkey’s largest bank

Çelik Motor Tic. A.Ş.

BMC – one of the largest commercial vehicle manufacturers in Turkey.

Ekol Logistics

Carrefoursa Carrefour Sabancı Ticaret Merkezi A.Ş.

Gemlik Gübre Sanayii A.Ş.

Trakya Cam Sanayii A.Ş.

Indeks Bilgisayar Sistemleri Mühendislik Sanayi ve Ticaret A.Ş

Dorak Turizm ve Gayrimenkul Yatırımları A.Ş.

Le-Co Deri Turizm ve San. A.Ş.

Co DMC Turizm ve Ticaret Ltd. Şti.

Atmosfer Balonculuk Ticaret Turizm Ltd. Şti.

Gökyüzü Balonculuk Hizmetleri Taş. Tur. Tic. Ltd. Şti.

Kapadokya Balonculuk Turizm Ticaret Ltd. Şti.

Sultan Balonculuk Havacılık Tur. Rek. Ltd. Şti.

Şeref Turizm ve Tic. Ltd. Şti.

Akben Turizm Seyahat ve Tic. A.Ş.,

Stüdyo Turizm Taş. ve Tic. A.Ş.,

Deluks Turizm San. ve Tic. A.Ş.,

DLX Seyahat Acentalığı ve Tic. A.Ş.,

GNM Turizm Tic. Ltd. Şti.

Bankalararası Kart Merkezi

ASF Ses Işık ve Görüntü Sistemleri A.Ş.

Essity AB

Marmara Kağıt ve Ambalaj Sanayi ve Ticaret Anonim Şirketi

Guccio Gucci S.p.A.(Gucci)

Hugo Boss AG

Energy Tier 3

Erdem & Erdem Law Office advises on natural gas-, coal-, and oil-fired power plants, co-generation facilities, hydroelectric projects, and wind, solar and other renewable energy projects. Areas of expertise include negotiating and drafting EPCs, privatisation, renewables, PPPs and project financing. Ercüment Erdem and Özgür Kocabaşoğlu are the practice heads.

Key clients

Yıldırım Enerji Holding A.Ş.

Yıldırım Holding

Yılport Holding

Türkiye Şişe ve Cam Fabrikaları A.Ş. (Şişecam)

Trakya Cam

Aktor Arbiogaz JV

Project finance/projects Tier 3

Erdem & Erdem Consultancy Ltd's sector expertise includes renewable energy, heavy industries, infrastructure, construction, airports and seaports. Its varied portfolio of finance work includes project finance and Islamic finance transactions, as well as those involving syndicated credit facilities. Elsewhere, the team assists clients with the drafting and negotiation power and gas supply contracts and privatisations, among other matters. Clients include domestic and international credit providers, sponsors, joint venture partners and contractors. Ercüment Erdem jointly leads the team with Ozgur Kocabasoglu.


‘They know how to deal with problematic situations’.

Key clients

Yılport Holding

Yıldırım Holding

Aktor Arbiogoz JV

Türkiye Şişe ve Cam Fabrikaları A.Ş.

Paşabahçe Mağazaları A.Ş.


Commercial, corporate and M&A Tier 4

Erdem & Erdem Law Office is a first port of call for many clients, including public and private companies, private equity firms, financial sponsors, investment banks and governmental entities. Jointly led by Ercüment Erdem and Özgür Kocabaşoğlu, the team handles M&A, cross-border transactions, business advisory work, inbound and outbound transactions, privatisations, exits, asset transfers and franchise agreements.


‘Timely response and professionalism’.

‘Thinking for the clients on how to save costs and doing things efficiently’.

‘Polite, friendly, detailed and reassuring working style’.

‘Tuna Colgar is very knowledgable about M&A practices, very responsive and smooth as a person to deal with’.

Key clients

Yıldırım Holding

Yılport Holding


Polat Holding

BMC Otomotiv

Norm Civata Sanayi ve Tic. A.Ş./ Norm Holding

Türkiye Spastik Çocuklar Vakfı (pro bono)

Tohum Otizm Vakfı (pro bono)

The firm:

Erdem&Erdem is an international law firm dedicated to providing practical business solutions to a diverse range of clients particularly in cross-border business transactions, M&As, corporate restructuring and governance, international contracts, corporate finance, project finance, energy/renewable energy, privatizations and PPPs, private equity investments, capital markets, competition and antitrust, litigation (execution and bankruptcy) and international arbitration.

Erdem&Erdem has a team of 50 fee-earners with specializations in line with the firm’s growing reputation and diversified practice areas.

Areas of practice:

International Transactions, M&As & Private Equity

The firm advises public and private companies, private equity firms, financial sponsors, investment banks, governmental entities in a variety of complex, cross-border and strategic transactions including structuring and organizing fund sponsors and investment funds, executing acquisitions, financing and exit transactions.

Competition & Antitrust

The firm has a strong record of successful representation of the largest regulated and networked companies in Turkey, Europe, Asia, and the CIS and advisory in competition regulations.

Banking & Finance

The firm advises corporate borrowers, private equity funds, financial advisers, commercial banks, investment banks in construction and acquisition finance and refinance, project finance, banking and capital market transactions, including issuances of high-yield debt security, secured and unsecured debt offerings and private placements.


The firm represents foreign and local clients in privatization projects in Turkey, Western Europe and Southeast Asia. Its clients encompass refinery, port, airport, energy, healthcare, real estate, consumer goods, natural resources, and infrastructure and construction industries, also banks and financial institutions.

International Contracts, Agency & Distributorship

The firm has decades of diverse experience in the field of international contracts. Team members are known for their in-depth know-how and extensive experience in drafting and negotiating all types of commercial contracts, such as agency, franchise, supply and distribution and commission arrangements, foreign representative and consultancy agreements.

Energy & Renewables

The energy sector experience includes natural gas, coal and oil-fired power plants, co-generation facilities, agricultural and municipal solid waste projects, hydroelectric projects, and wind, solar and other renewable energy facilities.

Real Estate & Construction

The firm represents investors, developers, owners, lenders, prime contractors, REITs, PPPs, subcontractors, architects, port management authorities, airlines and energy utility companies involved in the construction and development of manufacturing, distribution and operational facilities in real estate finance, joint venture, leasing, acquisition and disposition of real estate assets.

Capital Markets & Corporate Governance: the firm provides innovative solutions to a wide variety of capital raisings and compliance and governance issues the clients face in Turkey and abroad.

International Arbitration

The firm’s arbitration practice is among its most prominent field of work. The team handles commercial and treaty dispute cases under the rules of every major arbitration system and in a wide variety of industries, including energy, mining, manufacturing, transportation, telecommunications, construction, finance, manufacturing and sports arising in Western Europe, Asia, Africa, Middle East and the CIS.

Litigation & Bankruptcy

The hallmark of the litigation team is the experience of the lawyers who have been involved in litigation in almost every major practice, including M&As and post-closing disputes, insurance, transportation, breach of contract, partnership and joint venture disputes, real estate contracts, unfair competition, franchise and distributor disputes, government contracts, shareholders disputes.

Maritime Law

The firm regularly represents clients in trials and appeals of admiralty and maritime matters. Their team handles and provides efficient resolution to maritime insurance and liability claims and other transportation matters in international or coastal trade. Erdem&Erdem has been involved in both prosecuting and defending transportation claims involving marine carriers.


The firm regularly counsels airlines, airport authorities and other aviation industry clients in civil aviation regulation and enforcement, aircraft finance, engine and aircraft leasing, competition law and antitrust, mergers and alliances, aircraft acquisition and disposition, airport terminal construction and expansion projects, as well as aviation company reorganization, and restructuring issues.

Hospitality & Leisure

The team is often engaged by foreign and local clients to provide support in all aspects of the development, acquisition, sale, financing, franchising, leasing and operation of hospitality and leisure assets that include hotels, resorts, theme parks, entertainment and sport complexes and convention centers that are abroad and in Turkey.

Intellectual Property

The firm advises clients in telecommunications, Internet, advertising, and media who develop and license intellectual property, enter into transactions involving intellectual property, acquire portfolios of intellectual property, and make strategic decisions that are based on such considerations.

Tax Law

Taking into account the fact that every commercial transaction comes with tax implications, we provide our clients with tax advisory and tax litigation services.

Department Name Email Telephone
M&A and private equity Prof Dr Halil Ercüment Erdem
M&A and private equity Özgür Kocabasoglu
M&A and private equity Tuna Çolgar
Competition and antitrust Prof Dr Halil Ercüment Erdem
Competition and antitrust Mert Karamustafaoglu
Banking, project finance and PPPs Prof Dr Halil Ercüment Erdem
Banking, project finance and PPPs Özgür Kocabasoglu
Banking, project finance and PPPs Nezihe Boran
Privatisation Prof Dr Halil Ercüment Erdem
Privatisation Özgür Kocabasoglu
Privatisation Süleyman Sevinç
International contracts, agency and distributorships Prof Dr Halil Ercüment Erdem
International contracts, agency and distributorships Tuna Çolgar
Energy and renewables Tuna Çolgar
Energy and renewables Mert Karamustafaoğlu
Real estate and construction Tuna Çolgar
Real estate and construction Süleyman Sevinç
Capital markets and corporate governance Prof Dr Halil Ercüment Erdem
Capital markets and corporate governance Özgür Kocabasoglu
Capital markets and corporate governance Nezihe Boran
International arbitration Prof Dr Halil Ercüment Erdem
International arbitration Piraye Erdem
International arbitration Süleyman Sevinç
Litigation and bankruptcy Piraye Erdem
Litigation and bankruptcy Süleyman Sevinç
Litigation and bankruptcy Alper Uzun
Maritime Süleyman Sevinç
Aviation Özgür Kocabasoglu
Hospitality and leisure Tuna Çolgar
Intellectual property Özgür Kocabasoglu
Compliance Mert Karamustafaoğlu
Personal Data Protection Mert Karamustafaoğlu
Tax Law Canan Doksat
Labor Law and mediation Alper Uzun
Photo Name Position Profile
Mr Tuna Colgar  photo Mr Tuna Colgar Tuna Çolgar is a Partner in Corporate Affairs Department of Erdem &…
Prof Dr Halil Ercument Erdem  photo Prof Dr Halil Ercument Erdem Ercument Erdem is the Founder and Senior Partner of Erdem & Erdem…
Mrs Piraye Erdem  photo Mrs Piraye Erdem Piraye Erdem is the Founder and Managing Partner of Erdem & Erdem.…
Mr Mert Karamustafaoglu  photo Mr Mert Karamustafaoglu Mert Karamustafaoglu is Partner and Competition and Compliance Leader in Erdem&Erdem. He…
Mr Ozgur Kocabasoglu  photo Mr Ozgur Kocabasoglu Özgür Kocabaşoğlu is a Partner and the Head of Corporate of Erdem…
Mr Suleyman Sevinc  photo Mr Suleyman Sevinc Suleyman Sevinc is Partner and Head of Dispute Resolution Department of Erdem…
Number of lawyers : 31
at this office : 28
Contacts : Prof Dr H Ercüment Erdem
Contacts : Piraye Erdem
Other office : Izmir

Anadolu Cam, Denizli Cam, Paşabahçe, Soda Sanayii and Trakya Cam were Merged Under Şişecam

Five companies of the Şişecam Group, four of which are publicly held, namely Anadolu Cam, Denizli Cam, Paşabahçe, Soda Sanayii and Trakya Cam have merged under Şişecam and the transaction was completed as of September 30, 2020.  Erdem & Erdem is proud to represent Şişecam in this merger transaction which is the biggest merger in Turkish capital markets.