One Law Partners

What One Law Partners does

One Law Partners (법무법인 원) is a private, full-service South Korean law firm founded in January 2009 and headquartered at Landmark Tower in Gangnam, Seoul. The firm provides professional legal services across litigation, corporate and transactional advisory, tax, labor, intellectual property, criminal defense, fair trade, public administration, and family law, with named specialization in three verticals: defense industry/public procurement, ESG, and entertainment & sports — the last two recognized by the Asia Business Law Journal Korea Law Firm Awards in 2024 and 2025.

The firm operates multiple branded service programs: Heritage One (헤리티지 원) for inheritance and wealth succession, Property One (프라퍼티 원) for real estate development and tax, an Influencer Support Center for digital content creators, One-Line for human rights and whistleblower reporting, and the Sun Pro Bono Center for public interest work. On June 17, 2026 the firm announced a merger with Minwho Law Group (법무법인 민후), effective October 1, 2026, which will add IT, intellectual property, data privacy, and technology regulation practices and is expected to lift the combined entity to roughly 100 attorneys under the '100-member class' tier. At the merger's effective date the firm plans to launch an AI Information Security Center (AI 정보보안센터).

One Law Partners bills on a fee-for-service, engagement-by-engagement basis with no public pricing; revenue is not disclosed. Distribution is direct from the Seoul headquarters, and client acquisition relies on professional reputation, attorney thought leadership (columns in Law Times, Blotter, Electronic Times, Chosun Biz, Korea Economic Daily, MBC), seminar hosting, and referrals. The firm has recorded several high-stakes outcomes, including full cancellation of a Defense Acquisition Program Administration bid-restriction on a KRW 17.5 billion defense parts contract and a KRW 10 billion+ inheritance tax refund via Seoul Administrative Court in 2025. Leadership is shared between Co-Representative Attorneys Yoon Ki-won (윤기원) and Lee Yoo-jung (이유정).

Name

One Law Partners

Legal name

One Law Partners, LLC

Website

https://onelawpartners.com

Company type

Private

Founded year

2009

Operating status

Operating

Headcount range

1–10 employees

Short description

One Law Partners is a private Seoul-based full-service Korean law firm (founded 2009) offering litigation, corporate, tax, ESG, defense-procurement, and entertainment/sports advisory; it is merging with Minwho Law Group effective October 2026 to reach ~100 attorneys and add AI, IP, and data privacy capabilities.

Ownership category

akta.pro rank

Product category

Legal Services

NAICS

Offices of Lawyers (541110), Legal Services (5411), Other Legal Services (54119)

SIC

Services-Legal Services (8111)

akta.pro primary industry

Corporate & Commercial Law (BPAHAAAA)

akta.pro secondary industries

Mergers & Acquisitions (M&A) & Securities Law (BPAHAAAI), Regulatory & Compliance Law (BPAHAAAC), Real Estate & Construction Law (BPAHAAAE), Family & Private Client (Trusts & Estates) Law (BPAHAAAK)

Keywords

• Legal advisory services
• Corporate litigation
• Public administration law
• ESG legal advisory
• Defense industry law

Headquarters

HQ city

Gangneung

HQ country

South Korea

HQ region

Asia

Offices1 record

Markets served

GTM type

B2B

Offering type

Services

Cost components

Personnel, Operations, Marketing or Sales, Technology or R&D, Others

Revenue model

1. Legal Services Revenue: One Law Partners generates revenue through professional legal services including litigation representation, corporate and transactional advisory, regulatory compliance consulting, and government affairs counsel. Services are billed on a fee-for-service basis, with engagements spanning litigation, M&A advisory, regulatory compliance, tax, employment, IP, and other specialized legal domains.

Go-to-market motion1 record

Distribution channels1 record

Marketing channels4 records

Core offering

One Law Partners is a full-service South Korean law firm providing professional legal services across litigation, corporate and transactional advisory, regulatory compliance, tax, employment, intellectual property, and government consulting. The firm operates specialized practice programs including AI & Tech, ESG, Heritage One (inheritance planning), Property One (real estate and tax), and the Influencer Support Center, serving enterprise and institutional clients primarily in defense, ESG, entertainment, sports, and public administration.

Product overview

One Law Partners is a full-service Korean law firm offering legal services across diverse practice areas including civil litigation, corporate law, intellectual property, criminal defense, fair trade, tax, public administration, family law, international law, finance, and industry-specific sectors. The firm operates specialized service programs including AI & Tech (AI and technology regulation advisory), ESG Center (sustainability legal services), Heritage One (inheritance and estate planning), Property One (real estate legal and tax consulting), Influencer Support Center (digital content creator legal support), and Whistleblowing Center (human rights and anti-corruption reporting). The firm announced a merger with Minwho Law Group effective October 1, 2026, which will expand capabilities in data, IP, and technology law, including the launch of an AI Information Security Center.

Differentiator

Problem solved

Functional benefit

Brands

• Sun Pro Bono Center: Public interest legal services center established in November 2013, dedicated to advancing human rights and promoting justice
• Property One (프라퍼티 원)
• Heritage One (헤리티지 원)
• One-Line (원라인)
• AI Security Center (AI 정보보안센터)
• Influencer Support Center (인플루언서 지원 센터)

Products and services

• AI & Tech Legal Practice
• ESG Legal Advisory
• Heritage One (헤리티지 원)
• Property One (프러퍼티 원)

Quantifiable outcome

• Won full cancellation of Defense Acquisition Program Administration bid participation restriction for defense contractor S Company — approximately KRW 1.75 billion contract at stake
• +1 more outcomes

Segments3 records

Ideal customer profiles5 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Partnerships

Seven partnerships are on record, tiered core and minor.

• Minwho Law Group (법무법인 민후)coreStrategic or Co-development Partner · 1 October 2026One Law Partners and Minwho Law Group announced a merger effective October 1, 2026, integrating into a single entity under the One Law Partners brand. Minwho brings specialized expertise in IT, intellectual property, data, and technology regulation law. The merger is intended to provide AI-based work structures and customer-centric services as the firm prepares for the AI era.
• Korea Women Entrepreneurs Association (한국여성경제인협회, 여경협)minorStrategic or Co-development Partner · 24 June 2026One Law Partners signed an MOU with the Korea Women Entrepreneurs Association to build a cooperation system for responding to diverse legal issues that may arise during business management. The partnership aims to provide tailored legal support for women-owned enterprises on risk management and compliance matters. The signing ceremony was attended by Yoo-Jung Jeong (이유정) and Kang-Seo-Young (강서영).
• Elmgeap (얼마집)minorStrategic or Co-development Partner · 12 June 2026One Law Partners and Elmgeap co-hosted a Remediation Project × Tax Strategy Seminar, bringing together expertise in urban regeneration project law and real estate tax planning. The seminar provided practical guidance on tax strategy and legal compliance for participants in redevelopment and remediation projects.
• Wellbeing Culture Movement (웰다잉문화운동)minorStrategic or Co-development Partner · 9 September 2024One Law Partners signed an MOU with the Wellbeing Culture Movement to promote social awareness and policy improvement regarding end-of-life planning. The partnership covers advocacy for inheritance and will-related legal system improvements, education on inheritance planning and will-writing, and joint initiatives on related legal reforms.
• Industrial AI International Certification Forum (산업 AI 국제인증 포럼)minorStrategic or Co-development Partner · 25 June 2024One Law Partners signed an MOU as a participating institution in the Industrial AI International Certification Forum, organized by the Ministry of Trade, Industry and Energy, KTL, and KIAT. The partnership aims to activate the industrial AI certification ecosystem and promote digital transformation of Korean industry through safe and trustworthy AI adoption.
• TRAIN (Trustworthy AI International Network)minorStrategic or Co-development Partner · 1 February 2024One Law Partners participates in TRAIN, an international coalition for trustworthy AI, providing legal and ethical advisory. The firm collaborates with industry, legal, and academic stakeholders to advance AI reliability standards in Korea and internationally.
• Think4B (씽크포비엘)minorStrategic or Co-development Partner · 19 December 2023One Law Partners and Think4B conducted joint consulting on AI trustworthiness, combining legal and technology consulting expertise to advise companies on AI reliability and compliance frameworks.

Scale indicators3 records

Recent moves7 records

Expansion highlights6 records

Broad incumbents

• Yoon & Yang (윤앤양): Mid-to-large Korean full-service law firm with strong litigation, corporate, and administrative law practices. Comparable to One Law Partners in the mid-tier Korean legal market, particularly in administrative and regulatory matters.
• Kim & Chang (김앤장): Korea's largest and most prominent law firm with over 1,000 attorneys, providing full-service corporate, litigation, regulatory, and IP advisory. As the dominant Korean Big Law incumbent, it competes with One Law Partners across virtually every practice area including M&A, ESG, defense, and entertainment.
• Yulchon (율촌): Major Korean Big Law firm with broad corporate, litigation, IP, and regulatory practices, recognized internationally. Comparable to One Law Partners as a full-service Korean firm competing for corporate panels, with substantially greater scale and resources.
• Shin & Kim (신김): Leading Korean law firm with comprehensive corporate, finance, IP, and dispute resolution capabilities. A broad incumbent competing with One Law Partners for the same Korean enterprise and institutional client base.
• Lee & Ko (이앤코): One of Korea's leading full-service law firms with deep corporate, M&A, antitrust, and litigation practices. Directly competes with One Law Partners for enterprise and institutional clients across overlapping practice areas.
• Bae, Kim & Lee (BKL / 백김): Major Korean law firm with strong corporate, finance, and dispute resolution practices; internationally recognized. Comparable to One Law Partners as a broad incumbent offering overlapping service lines to similar enterprise clients.

Direct peers

• Hwawoo (화우): Korean mid-sized law firm known for corporate, M&A, antitrust, and litigation expertise. Direct peer to One Law Partners in size and practice focus, with strong overlap in corporate advisory and competition law matters.
• Sejong (세정): Korean mid-sized full-service law firm with comparable practice breadth including corporate, IP, and litigation. A direct peer to One Law Partners in scale and practice mix, competing for similar mid-market Korean corporate clients.
• Minwho Law Group (법무법인 민후): Specialized Korean law firm focused on IT, intellectual property, data, and technology regulation. Becoming part of One Law Partners via the announced October 2026 merger, the two firms were direct peers in technology-law advisory prior to integration.
• Yuhan Partners (유한파트너스): Korean law firm specializing in corporate, IP, antitrust, and technology matters. Direct peer to One Law Partners; notably, One Law attorney Jung-ik Oh previously worked at Yuhan Partners, illustrating the talent-flow overlap between these mid-sized Korean firms.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat4 records

Key risks5 records

Key highlights6 records

Customer concentration

• Facebookfacebook.com/onelawpartners
• LinkedInlinkedin.com/company/onelawpartners

Revenue estimate

Valuation estimate

Number of profiles

Profiles6 records

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A1 record

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about One Law Partners