Yoon & Yang LLC
Rankings
Awarded leading firm in Global 2026
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Overview
Provided by Yoon & Yang LLC
Firm Overview
Yoon & Yang is one of the largest full-service Seoul headquartered law firms. Yoon & Yang has over 570 lawyers and other professionals including over 50 foreign qualified lawyers. The firm has experienced lawyers qualified in the US, Germany, China, Canada, Russia, Australia and New Zealand. Our main office in Seoul is supported by our overseas offices in Ho Chi Minh City, Hanoi, Jakarta and Tashkent.
Yoon & Yang’s one-stop integrated legal services tailored to the clients’ needs allow us to respond proactively to market changes and offer innovative solutions. For this purpose, we have a cadre of highly qualified attorneys, senior consultants and expert advisors with decades of knowledge and experience in various areas and industries.
Firm Details
Address: (06164) ASEM Tower, 517 Yeongdong-daero, Gangnam-gu, Seoul, South Korea
Managing Partners: Myung Soo Lee, Young Ho Kang, Jin Guk Shi
Number of partners: 230+
Number of professionals: 570+
Languages: English, German, Spanish, Japanese, Korean, Russian, Vietnamese, Chinese, French
Overseas Offices
1. Tashkent Office
107-B, Amir Temur Street, Tashkent 100084, Uzbekistan
T: +998 71 238 9032
F: +998 71 238 9031
2. Ho Chi Minh City Office
9th Floor, Cantavil An Phu Complex, No. 01 Song Hanh Street, Binh Trung Ward, Ho Chi Minh City, Vietnam
T: +84 28 7304 0001
F: +84 28 7304 0002
3. Hanoi Office
9th Floor, East Tower, Lotte Center Hanoi, No. 54 Lieu Giai Street, Giang Vo Ward, Hanoi City, Vietnam
T: +84 24 7304 0001
F: +84 24 7304 0002
4. Jakarta Korean Desk in Amir Syamsudin & Partners
9th Floor. Menara Sudirman, Jl. Jend. Sudirman kav. 60, Jakarta 12190, Indonesia
T: +62 21 522 0855
F: +62 21 522 0840
More information is available at Yoon & Yang’s Website, LinkedIn, and YouTube.
Practice Areas
- Antitrust & Competition
- Customs ∙ International Trade
- Finance ∙ Capital Markets
- Corporate Law
- Litigation ∙ Arbitration
- Employment ∙ Labor
- Tax
- Intellectual Property
- Criminal Defense
Industries
- Construction
- Mobility
- Real Estate
- Entertainment
- Environment
- Finance · Capital Markets
- Defense Industry · Public Contract
- Energy
- Maritime & Aviation
- Technology, Media & Telecommunications
Ranked Offices
Provided by Yoon & Yang LLC
South Korea - Head office
Seoul
18/19/22/23/34th Fl. ASEM Tower 517 Yeoungdong-daero Gangnam-gu , Seoul, Seoul, South Korea, 06164, Seoul
Ranked Departments
Ranked Individuals
Contributions
Latest contributions provided by Yoon & Yang LLC
All contributions provided by Yoon & Yang LLC
Articles, highlights and press releases
33 items provided by Yoon & Yang LLC
Yoon & Yang Boosts Cross-Border Corporate Advisory with Three Seasoned Practitioners
Yoon & Yang announced that it has strengthened its cross-border corporate advisory practice with the addition of Sukjin(SJ) Lim, Senior Foreign Attorney, Yeon Jeong Chae, Partner, and Minjung Jekarl, Senior Foreign Attorney.
Yoon&Yang and VILAF enter a Professional Collaboration to establish the Korea-Vietnam Practice Unit
Yoon & Yang and VILAF have entered into a professional collaboration, establishing the Vietnam-Korea (or Korea-Vietnam) Practice Unit as a dedicated platform to provide high-quality legal services to Korean businesses navigating complex legal matters in Vietnam.
Yoon & Yang Strengthens International Finance Practice with Addition of Veteran Attorneys
Yoon & Yang LLC announced that it has welcomed experts with extensive experience in global finance market, Partner Young-Joon Cho and Senior Foreign Attorney Eun Sik Shin, as new Partners.
Yoon & Yang Bolsters Top-Tier M&A Lineup with Hire of Leading PE/VC Dealmakers
Yoon & Yang LLC announced that it has upgraded a full lineup for M&A practice by recruiting Young Ju Kim and Min Joo Kim from LAB Partners in Korea, both recognized for their strong expertise in private equity (PE) and venture capital (VC) transactions.
Yoon & Yang Strengthens Antitrust & Competition Practice with Hire of Seasoned Experts
Yoon & Yang LLC announced that it has appointed veteran antitrust lawyer Keum Seok Oh as Partner and former Korea Fair Trade Commission (KFTC) Commissioner Yeong Ho Shin as Senior Advisor. The two each bring over 30 years of experience in competition law and regulatory policy.
Yoon & Yang Bolsters M&A Practice with Another High-Profile Hires of Jin Kook Lee and So Yeon Yoon
Yoon & Yang has further strengthened its M&A and corporate advisory capabilities with the recruitment of Partner Jin Kook Lee, a veteran dealmaker renowned for his exceptional track record in both domestic and cross-border M&A and capital markets, and rising next-generation star Partner So Yeon Yoon
Yoon & Yang Welcomes Cross-Border M&A expert Myong-Hyon (Brandon) Ryu as Senior Foreign Attorney
Yoon & Yang announced that Myong-Hyon (Brandon) Ryu (admitted in New York, USA), a leading expert in cross-border mergers and acquisitions, joined the firm as a Senior Foreign Attorney.
Yoon & Yang Hires Three Former Judges to Further Strengthen Litigation Practice
Yoon & Yang LLC has recently bolstered its litigation practice by recruiting three former judges as partners: Oh Young Lee, Jeong Dae Park, and Dong Bok Park.
Yoon & Yang Scores a Team Hire for Its International Tax Practice
Yoon & Yang, one of the big-six law firms in Korea, has doubled down on its international practice. The firm is being hailed for its “game changing hires” for its international tax practice with the recruitment of three leading figures from a competing law firm – Messrs. Jay Shim, Sung Hyun Ryu, and
Yoon & Yang Hires Seasoned M&A lawyer Hee Woong Yoon as Managing Partner
Yoon & Yang LLC announced that it has hired mergers and acquisitions heavyweight Hee Woong Yoon as a new Managing Partner and the Head of the firm’s newly established Future Strategy Planning Task Force.
Yoon & Yang Strengthens Antitrust & Competition Practice Group with Addition of Former KFTC Official
Yoon & Yang LLC has bolstered its Antitrust & Competition practice by welcoming former KFTC deputy director Chiyeol Kim as a partner.
Yoon & Yang Hires Adrian Bae, Ex-BAT North Asia VP, as Senior Foreign Attorney
Yoon & Yang LLC (“Yoon & Yang”) has recruited Adrian Bae, former Vice President of North Asia at British American Tobacco (BAT), the world’s largest tobacco company, as a Senior Foreign Attorney.
Yoon & Yang Announces New Leadership Appointing Senior Managing Partner Myung Soo Lee
Yoon & Yang LLC (“Yoon & Yang”) announces a leadership change, effective on January 1, 2024.
International Construction and Arbitration Expert Joins Yoon & Yang
Leading international construction and arbitration expert Joseph Lee joins Yoon & Yang’s head office in Seoul, South Korea.
Yoon & Yang's Antitrust & Competition Practice Group Expands with the Hire of Hee Jae Lee
Leading full-service law firm Yoon & Yang is further strengthening its Antitrust & Competition practice with the hire of a former director of the Korea Fair Trade Commission. Yoon & Yang has hired Hee Jae Lee as a partner in the firm’s antitrust & competition practice group.
Yoon & Yang Continues to Bolster Cross-border Capabilities with Another Hire of Senior Foreign Attor
Yoon & Yang continues to strengthen its cross-border capabilities with the hire of two Senior Foreign Attorneys from Lee & Ko and Samsung Electronics. Yoon & Yang announced that Elayne Heeseung Sung and Irene Y. Kim have joined the firm’s Seoul office as Senior Foreign Attorneys.
Yoon & Yang Promotes Six Promising Lawyers to Partnership
Yoon & Yang LLC, a top tier law firm in Korea, promoted six young and promising lawyers to partnership last month. The newly minted partners are Dong Hee Kang, Yoon Sun Kim, Seong-joong Kim, Sung Bin Jhung, Yuntae Kim, and Young Chang Lee.
Yoon & Yang Hires Three Senior Foreign Attorneys to Strengthen Cross-border Capacity
Yoon & Yang LLC has hired three Senior Foreign Attorneys, Jason W. Lee (U.S.-qualified), Song Feng Hong (China-qualified) and Sung Jin Ro (U.S.-qualified), in anticipation of further strengthening the firm’s cross-border capacity.
Yoon & Yang hires former Lee & Ko partner to strengthen its aviation workforce
Yoon & Yang hires former Lee & Ko partner to strengthen its aviation workforce
Former FSC Chairman joins Yoon & Yang
Yoon & Yang LLC is further expanding its banking & finance and financial regulation practices with Mr. JongKu Choi, a former Chairman of the Financial Services Commission (FSC), joining the firm. In October 2022, Yoon & Yang welcomed the former government official, who brings approximately 40 years
An Overview of the Metaverse and its Legal Implications in South Korea
An overview of the industry and policy trends concerning the metaverse and legal issues
Yoon & Yang Advises Doosan Heavy Industries & Construction on its Investment in U.S. NuScale Power
South Korean law firm Yoon & Yang LLC advised Doosan Heavy Industries & Construction (DHIC) in aggregating and implementing investment of USD 60 million in NuScale Power, a nuclear power plant manufacturer in the U.S..
KFTC's Amended Cartel Leniency Guidelines
The Korea Fair Trade Commission (“KFTC”) has started enforcement of the amended Cartel Leniency Guidelines (Guidelines”) on June 10, 2021.
Yoon & Yang Hires Former Presiding Judges and Chief Prosecutor
Yoon & Yang LLC’s strive for excellence in litigation and criminal defense has recently passed another mark with the recruitment of two former presiding judges and one former chief prosecutor as the firm’s new partners.
Enhanced Penalties under Environmental Laws in South Korea
Recent amendments to environmental laws and regulations in South Korea have strengthened penalties for violations, particularly expanding the scope and application of administrative fines.
Implementation of the World’s First “Hydrogen Law” Expected to Accelerate the Hydrogen Economy
The Hydrogen Economy Promotion and Hydrogen Safety Management Act (“Hydrogen Act”), the world’s first hydrogen law, took effect on February 5, 2021.
Establishment of K-RE100 and Implementation of Support Systems
The amendment to the Regulation on the Support of New and Renewable Energy Facilities (“Regulation”) announced by the Ministry of Trade, Industry, and Energy of Korea (“MOTIE”) became effective on January 1, 2021.
Yoon & Yang Bolsters Capabilities in TMT Sector
Yoon & Yang LLC has announced recent hires of Jaebum Seok and Sugyoung Yi to further reinforce its capabilities in advising its clients on regulatory issues as well as government policies in relation to the TMT sector.
South Korea’s National Assembly Passed the Bill on Punishment for Serious Accidents
South Korea’s National Assembly Passed the Bill on Punishment for Serious Accidents.
Korean Competition Law to Undergo Complete Overhaul
The amendment bill to comprehensively overhaul the Monopoly Regulation and Fair Trade Act (“MRFTA”) was passed by the National Assembly on December 9, 2020 and will become effective in December of 2021.
Yoon & Yang Boosts Cross-Border Corporate Advisory with Three Seasoned Practitioners
Yoon & Yang announced that it has strengthened its cross-border corporate advisory practice with the addition of Sukjin(SJ) Lim, Senior Foreign Attorney, Yeon Jeong Chae, Partner, and Minjung Jekarl, Senior Foreign Attorney.
Yoon&Yang and VILAF enter a Professional Collaboration to establish the Korea-Vietnam Practice Unit
Yoon & Yang and VILAF have entered into a professional collaboration, establishing the Vietnam-Korea (or Korea-Vietnam) Practice Unit as a dedicated platform to provide high-quality legal services to Korean businesses navigating complex legal matters in Vietnam.
Yoon & Yang Strengthens International Finance Practice with Addition of Veteran Attorneys
Yoon & Yang LLC announced that it has welcomed experts with extensive experience in global finance market, Partner Young-Joon Cho and Senior Foreign Attorney Eun Sik Shin, as new Partners.
Yoon & Yang Bolsters Top-Tier M&A Lineup with Hire of Leading PE/VC Dealmakers
Yoon & Yang LLC announced that it has upgraded a full lineup for M&A practice by recruiting Young Ju Kim and Min Joo Kim from LAB Partners in Korea, both recognized for their strong expertise in private equity (PE) and venture capital (VC) transactions.
Yoon & Yang Strengthens Antitrust & Competition Practice with Hire of Seasoned Experts
Yoon & Yang LLC announced that it has appointed veteran antitrust lawyer Keum Seok Oh as Partner and former Korea Fair Trade Commission (KFTC) Commissioner Yeong Ho Shin as Senior Advisor. The two each bring over 30 years of experience in competition law and regulatory policy.
Yoon & Yang Bolsters M&A Practice with Another High-Profile Hires of Jin Kook Lee and So Yeon Yoon
Yoon & Yang has further strengthened its M&A and corporate advisory capabilities with the recruitment of Partner Jin Kook Lee, a veteran dealmaker renowned for his exceptional track record in both domestic and cross-border M&A and capital markets, and rising next-generation star Partner So Yeon Yoon
Yoon & Yang Welcomes Cross-Border M&A expert Myong-Hyon (Brandon) Ryu as Senior Foreign Attorney
Yoon & Yang announced that Myong-Hyon (Brandon) Ryu (admitted in New York, USA), a leading expert in cross-border mergers and acquisitions, joined the firm as a Senior Foreign Attorney.
Yoon & Yang Hires Three Former Judges to Further Strengthen Litigation Practice
Yoon & Yang LLC has recently bolstered its litigation practice by recruiting three former judges as partners: Oh Young Lee, Jeong Dae Park, and Dong Bok Park.
Yoon & Yang Scores a Team Hire for Its International Tax Practice
Yoon & Yang, one of the big-six law firms in Korea, has doubled down on its international practice. The firm is being hailed for its “game changing hires” for its international tax practice with the recruitment of three leading figures from a competing law firm – Messrs. Jay Shim, Sung Hyun Ryu, and
Yoon & Yang Hires Seasoned M&A lawyer Hee Woong Yoon as Managing Partner
Yoon & Yang LLC announced that it has hired mergers and acquisitions heavyweight Hee Woong Yoon as a new Managing Partner and the Head of the firm’s newly established Future Strategy Planning Task Force.
Yoon & Yang Strengthens Antitrust & Competition Practice Group with Addition of Former KFTC Official
Yoon & Yang LLC has bolstered its Antitrust & Competition practice by welcoming former KFTC deputy director Chiyeol Kim as a partner.
Yoon & Yang Hires Adrian Bae, Ex-BAT North Asia VP, as Senior Foreign Attorney
Yoon & Yang LLC (“Yoon & Yang”) has recruited Adrian Bae, former Vice President of North Asia at British American Tobacco (BAT), the world’s largest tobacco company, as a Senior Foreign Attorney.
Yoon & Yang Announces New Leadership Appointing Senior Managing Partner Myung Soo Lee
Yoon & Yang LLC (“Yoon & Yang”) announces a leadership change, effective on January 1, 2024.
International Construction and Arbitration Expert Joins Yoon & Yang
Leading international construction and arbitration expert Joseph Lee joins Yoon & Yang’s head office in Seoul, South Korea.
Yoon & Yang's Antitrust & Competition Practice Group Expands with the Hire of Hee Jae Lee
Leading full-service law firm Yoon & Yang is further strengthening its Antitrust & Competition practice with the hire of a former director of the Korea Fair Trade Commission. Yoon & Yang has hired Hee Jae Lee as a partner in the firm’s antitrust & competition practice group.
Yoon & Yang Continues to Bolster Cross-border Capabilities with Another Hire of Senior Foreign Attor
Yoon & Yang continues to strengthen its cross-border capabilities with the hire of two Senior Foreign Attorneys from Lee & Ko and Samsung Electronics. Yoon & Yang announced that Elayne Heeseung Sung and Irene Y. Kim have joined the firm’s Seoul office as Senior Foreign Attorneys.
Yoon & Yang Promotes Six Promising Lawyers to Partnership
Yoon & Yang LLC, a top tier law firm in Korea, promoted six young and promising lawyers to partnership last month. The newly minted partners are Dong Hee Kang, Yoon Sun Kim, Seong-joong Kim, Sung Bin Jhung, Yuntae Kim, and Young Chang Lee.
Yoon & Yang Hires Three Senior Foreign Attorneys to Strengthen Cross-border Capacity
Yoon & Yang LLC has hired three Senior Foreign Attorneys, Jason W. Lee (U.S.-qualified), Song Feng Hong (China-qualified) and Sung Jin Ro (U.S.-qualified), in anticipation of further strengthening the firm’s cross-border capacity.
Yoon & Yang hires former Lee & Ko partner to strengthen its aviation workforce
Yoon & Yang hires former Lee & Ko partner to strengthen its aviation workforce
Former FSC Chairman joins Yoon & Yang
Yoon & Yang LLC is further expanding its banking & finance and financial regulation practices with Mr. JongKu Choi, a former Chairman of the Financial Services Commission (FSC), joining the firm. In October 2022, Yoon & Yang welcomed the former government official, who brings approximately 40 years
An Overview of the Metaverse and its Legal Implications in South Korea
An overview of the industry and policy trends concerning the metaverse and legal issues
Yoon & Yang Advises Doosan Heavy Industries & Construction on its Investment in U.S. NuScale Power
South Korean law firm Yoon & Yang LLC advised Doosan Heavy Industries & Construction (DHIC) in aggregating and implementing investment of USD 60 million in NuScale Power, a nuclear power plant manufacturer in the U.S..
KFTC's Amended Cartel Leniency Guidelines
The Korea Fair Trade Commission (“KFTC”) has started enforcement of the amended Cartel Leniency Guidelines (Guidelines”) on June 10, 2021.
Yoon & Yang Hires Former Presiding Judges and Chief Prosecutor
Yoon & Yang LLC’s strive for excellence in litigation and criminal defense has recently passed another mark with the recruitment of two former presiding judges and one former chief prosecutor as the firm’s new partners.
Enhanced Penalties under Environmental Laws in South Korea
Recent amendments to environmental laws and regulations in South Korea have strengthened penalties for violations, particularly expanding the scope and application of administrative fines.
Implementation of the World’s First “Hydrogen Law” Expected to Accelerate the Hydrogen Economy
The Hydrogen Economy Promotion and Hydrogen Safety Management Act (“Hydrogen Act”), the world’s first hydrogen law, took effect on February 5, 2021.
Establishment of K-RE100 and Implementation of Support Systems
The amendment to the Regulation on the Support of New and Renewable Energy Facilities (“Regulation”) announced by the Ministry of Trade, Industry, and Energy of Korea (“MOTIE”) became effective on January 1, 2021.
Yoon & Yang Bolsters Capabilities in TMT Sector
Yoon & Yang LLC has announced recent hires of Jaebum Seok and Sugyoung Yi to further reinforce its capabilities in advising its clients on regulatory issues as well as government policies in relation to the TMT sector.
South Korea’s National Assembly Passed the Bill on Punishment for Serious Accidents
South Korea’s National Assembly Passed the Bill on Punishment for Serious Accidents.
Korean Competition Law to Undergo Complete Overhaul
The amendment bill to comprehensively overhaul the Monopoly Regulation and Fair Trade Act (“MRFTA”) was passed by the National Assembly on December 9, 2020 and will become effective in December of 2021.