Yoon & Yang

South Korea



Yoon & Yang is a premier choice for all corporate and financial law areas, notably in the competition, technology and telecommunications, dispute resolution, employment and regulatory areas. The firm works with large international and domestic clients from all industries and sectors. This year, it moves up in the ‘Investment funds’ ranking and places in the ‘Private equity’ tier, nods to the firm’s growing body of work for asset managers and its mid-market private equity investments. In a momentous case, the firm was instrumental in a historic win for the Republic of Korea in the first investor-state dispute settlement arbitration under the Korea-US free trade agreement. Duk Mo Chung, Hoil Yoon and Sang Hoon Park are managing partners and vaunted experts in litigation, competition and employment, respectively. Recently, the firm hired partners Hwan Jun Heo, Jong Youl Choi and Yong Ho Choi from the Financial Supervisory Service to bolster its banking and finance practice group. Competition partners Sang Mo Koo and Jun Ran Lee departed for DR & Aju last summer.

Client feedback

“Yoon & Yang is excellent in developing strategies to defend a matter and is very detail-oriented. Also, we were impressed that each lawyer, regardless of seniority, devoted themselves to our project and provided consultations in a timely manner.” – Competition/antitrust

“Yoon & Yang, with its breadth of expertise especially in the field of competition laws, has been extremely professional and knowledgeable of our industry. It was evident that the team were the top experts in the field of competition and antitrust, and the team was able to advise an effective step-by-step strategies throughout the case. On top of the high quality legal service it provided, Yoon & Yang was also extremely accessible and attentive to our needs.” – Competition/antitrust

“We retained Yoon & Yang for their timely and quality advice. Yoon & Yang's long-standing history in antitrust laws was assured from the beginning, and we felt comfortable knowing we were in good hands. As a client, we enjoyed working with the committed attorneys at Yoon & Yang who were always professional and easy to communicate with.” – Competition/antitrust

“The team exuded professionalism and commitment. Whenever we work with Yoon & Yang, it has shown a dedicated attitude to solve our requests quickly and accurately. Based on various experiences in competition and antitrust, the team analysed and examined our requests from various angles to provide the optimal solutions to us. Its client-focused attitude is also very impressive.” – Competition/antitrust

“I think that Yoon & Yang's attorneys are highly strategic, professional and well-informed.” – Competition/antitrust

“While handling M&A deals, it is important to be advised by experts with various backgrounds. Comprising accountants, tax attorneys and foreign attorneys, as well as Korean attorneys, we believe that the firm’s one-stop advice is second to none in the Korean M&A market. In addition, the M&A team of Yoon & Yang are very good negotiators and have a high level of industry knowledge so that we could close the M&A deals successfully. It always comes up with fast and effective responses to complicated legal issues. Therefore, we are extremely satisfied with the service and we will continue to retain Yoon & Yang in the future.” – Corporate and M&A

“It provided quick feedback and an accurate interpretation of the law.” – Corporate and M&A

“From the very first stage of the dispute to the end of the hearing and negotiations between the parties, Yoon & Yang advised us in every single detail.” – Dispute resolution

“The firm is very dedicated to dealing with our requests, closely analysing legal issues and fact relevance, and suggesting problem-solving plans in various ways. I think its performance abilities are excellent.” – Dispute resolution

“It is commercial, of excellent quality, responsive and has bench strength in litigation.” – Dispute resolution

“Proactively researched our issue and found a solution in a timely manner.” – Dispute resolution

“Very client-oriented.” – Energy

“Knowledgeable and dedicated to the client.”– Energy

“The firm members that I have dealt with have shown excellent biotech and pharma expertise, excellent legal judgment, and excellent language skills. It has delivered very favourable legal results for my company.” – Intellectual property

“Yoon & Yang's positive attributes are highly capable professionals who work diligently to satisfy us, and the services they provide are both thorough and polished. I am satisfied with its value for our money and meeting our needs.” – Restructuring and insolvency

Keon Joo Cho

“He is devoted to our cases and responds promptly.”

Cholsoo Han

“Cholsoo Han is excellent in analysing issues and formulating a strategy based on his vast knowledge and experience. We all agree that he is an expert in competition and antitrust who is able to provide accurate and in-depth consultation.”

“He has very good knowledge and experience in all antitrust issues as a former Secretary General of the KFTC. He is a famous figure in the antitrust community in Korea.”

“Cholsoo Han has a high level of professionalism and excellent strategy. His advice based on his hands-on experience from the Korea Fair Trade Commission was very helpful for our organisation.”

Sang-Goo Han

“The positive attributes of attorney Sang Goo Han is his great knowledge of general corporate matters, and rehabilitations and restructuring, especially for matters of insolvency-related M&As and litigations. He is the most experienced attorney that we have since worked within Korea. We would definitely work with him in the future.”

“He has a broad and deep knowledge in the bankruptcy and insolvency field, and he works in a timely manner. He shows a friendly demeanour when giving us advice and his counsel was helpful to solve problems.”

Chul Ho Kim

“Chul Ho Kim is an expert in competition matters. His experience representing multiple multinational corporations, as well as large corporations in Korea in the field of competition was extremely helpful. He was also very attentive being always ready to answer questions and kindly explained anything that was unclear. It was absolutely a pleasure to work with him and he was extremely reliable throughout the case.”

“We always enjoy working with Chul Ho Kim, who is a highly rated practitioner in the competition field in Korea. As a client, we benefitted from his work experience that extends through a full scope of competition and antitrust laws. Thanks to Chul Ho Kim, our representation was solid and rooted in years of experience.”

Sung-Jin Kim

“As a partner of Yoon & Yang and leader of the firm’s M&A team, Sung-Jin Kim has advised us regarding our M&A transactions since our establishment. As far as we know, he has abundant experience in M&As and has extensive knowledge of legal issues arising from such transactions. In addition, his responses are very efficient and quick. His strengths lie on his creative approach to matters. He not only provides legal solutions but also helps us to successfully close deals by delivering hands-on advice and feasible alternatives.”

Sam Kim

“He is very kind, and always actively discusses with clients to fully understand the issues. Also, he always presents clear and effective solutions.”

Junsang Lee

“He has a depth of knowledge and expertise, and is very experienced. He is a former senior judge, very responsive, and he provides pragmatic and commercial advice.”

Soongki Yi

“Has deep knowledge of the oil and gas business.”

Seung Ryong Yoo

“He is excellent in communications and has an empathetic ability. He is very good at persuading judges at the court by organising the case in a nice order from the judges' point of view.”

Work highlights

Assisting a domestic bank to review tax issues that may arise in connection with a foreign company’s capital increase by third-party allocation and its implications to the existing shareholders and related party in Korea who participate in the capital increase.

Provide tax advice to a Korean company on its acquisition of shares of a real estate investment company holding real estate in Scotland.

Key clients

British American Tobacco Korea, First Abu Dhabi Bank, Hanjin Heavy Industries & Construction, Nestle Korea

Labour and employment
Work highlights

Advising GE OWS Korea and its subsidiaries on legal advice and compliance related to the operating working hour system according to the amended Labour Standards Act.

Successfully represented Posco ICT in an administrative litigation matter for the remedy of discrimination which was filed by dispatched workers, employees of five subcontractors.

Key clients

Bayer Korea, BMW, Enercon Korea, GlaxoSmithKline, IBM Korea, McAfee Korea, Otis Elevator, Sanofi Aventis Korea

Dispute resolution
Work highlights

Representing SK Innovation in a high-profile claim filed by LG Chem over alleged misappropriation of trade secrets of its electric vehicle battery.

Acting for Kolon Life Science after the approval of its drug Invossa was revoked by the Ministry of Food and Drug Safety over allegations of falsified reports.  

Key clients

Audi Volkswagen Korea, British America Tobacco Korea, General Electric, Keystone Foods, MAN Truck & Bus Korea

Investment funds
Work highlights

Advised Daishin Asset Management’s real estate fund’s investment in the trust beneficiary rights in the Canalside Building in Japan.

Acted for Hyundai Asset Management on its Crewe Toll Holdings Unit Trust’s acquisition of shares issued by three companies in Bailiwick of Guernsey.

Key clients                                                                                                       

KCLAVIS Asset Management, National Pension Service, SKS Mirae Asset Contents

Restructuring and insolvency
Work highlights

Representing Koramco REITs Management & Trust and Hana Bank in a case filed by the tenants of a building after the original owner, Newcore, commenced a rehabilitation procedure.

Acting for Daishin AMC in a lawsuit related to the wage-related substitute payment and general right to foreclose outside bankrupty. The outcome of the Supreme Court decision will affect the priorities of dividends in bankruptcy proceedings in Korea.

Key clients

K-Swiss, Metanet Security, Woori Bank

Corporate and M&A
Work highlights

Advised Hyundai Motor Company and Gwangju Metropolitan City on their joint venture deal to establish an auto manufacturing company.

Acted for Taiwanese conglomerate Uni-President Corporation on its acquisition of Korea’s Woongjin Foods.

Represented Koramco REIT’s Management and Trust’s acquisition of Citi Bank’s Seoul Headquarters building.

Key clients

CHA Biotech, E-Land Park, Jiangsu Yawei Technology Investment, Shinhan Financial Group

Capital markets
Work highlights

Assisted the Export-Import Bank of Korea in issuing $1 billion global bonds with a dual-tranche.

Advising issuer Avellino Lab USA on its pending IPO in Korea and on its deposit agreement with the Korea Securities Depository to, pursuant to the IPO, list issued Korean depository receipts on the Kosdaq.

Key clients

Cammsys Global, Korea Investment Holding, National Pension Service, Putra Kary International

Work highlights

Representing Qualcomm as lead counsel in Qualcomm’s appeal of the antitrust regulator’s administrative surcharge for alleged abuse of dominance involving the client’s patent licensing practices.

Advising US-based United Technologies Corporation in obtaining unconditional clearance for the Korea Fair Trade Commission’s review of its acquisition of Raytheon Company. The merger between the aerospace equipment supplier and Raytheon, a defence equipment company, is valued at $52 billion.

Key clients

Camso, Cathay Pacific Airways, NGK Spark Plug Corporation, Taekwang Group

Banking and finance
Work highlights

Advised the Export-Import Bank of Korea in its $100 million project financing for the construction of the Trishuli Hydroelectric Power Plant in Nepal.

Acted for Shinhan Investment Corporation on the establishment of its REIT, the Goyang A Zone REIT, and provided on all financing aspects of its investment in a housing development project in Gyeonggi province.

Key clients

Cape Investment and Securities, Industrial Bank of Korea, Samsung Securities, Shinhan Bank

Work highlights

Working with Korea Institute of Ocean Science & Technology on the sale of its original real estate property as it plans to relocate.

Successfully defended Busan Savings Bank in a Cambodian litigation case relating to a business cooperation agreement on the Camko City development project in Cambodia.

Key clients

Jeonnam Development Corporation, Korea Land and Housing Corporation, Korea Railroad Corporation

Work highlights

Represented Mugunghwa Trust in obtaining an approval of major shareholders’ change from the FSC during the course of its acquisition of Hyundai Asset Management.

Successfully defended Osstem Implant in an audit review and investigation by the Financial Supervisory Service.

Key clients

Korea Investment Holdings, Korea Midland Power, L’Oreal Korea, Yuhan Corporation