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Janson

Belgium

Janson is a long-established independent Belgian business law firm, celebrating 75 years in 2025 with a legacy rooted in the values of its namesake, Paul Emile Janson. The firm provides multilingual, multidisciplinary business law services to domestic and international clients and operates with roughly 100–120 lawyers.

Jara Del Favero Abogados

Chile

Jara Del Favero Abogados, founded in 1939, is a multidisciplinary Chilean law firm providing comprehensive legal services to national and international clients. The firm advises on environmental regulation, mining and water law, finance and tax matters and serves clients across sectors including utilities, mining, infrastructure, energy, agriculture and government.

Jaramillo Dávila Abogados

Ecuador

Jaramillo Dávila Abogados is a boutique law firm founded in 1950 in Ecuador that specializes in complex labor and employment matters, dispute resolution and litigation. The firm provides personalized, business-oriented counseling including union representation, collective bargaining, compliance advice and labor audits, and has a strategic alliance in Guayaquil with Larrea, Ortiz & Cía.

Jason Teoh & Partners

Malaysia

Jason Teoh & Partners is a boutique law firm established in 2015 and based in Kuala Lumpur, Malaysia. The firm focuses on international trade, tax and customs, construction and energy, technology, media and telecommunications, regulatory compliance and civil litigation, and serves local and international clients through a global network; its partner Jason Teoh is a member of the Strategic Alliance on WTO and Trade Remedies Law and Practice (SAWTR).

Jasper Hee Partnership

Malaysia

Jasper Hee Partnership (JHP) is a Malaysian law firm established approximately five years ago that focuses on complex litigation and dispute resolution, particularly in insurance, maritime, corporate and construction-related disputes, and arbitration. The firm represents clients in Malaysian courts at all levels and in cross-border matters for clients including trading houses, banks, construction and manufacturing companies.

Jeantet

France, Morocco +1

Jeantet is a French business law firm founded in 1924 that advises domestic and international clients on corporate transactions, litigation, tax and regulatory matters. The firm maintains offices in France, Casablanca (Morocco) and Kiev (Ukraine) and emphasizes cross-border work and sector-specific expertise.

Jebbink Soeteman advocaten

Netherlands

Jebbink Soeteman advocaten is a Netherlands-based boutique law firm founded in 2009 that focuses on defence in white-collar and criminal matters. The firm handles financial crime, fraud, cybercrime, privacy law, sanctions/export-control cases and international bribery matters, and adopts a client-focused, holistic approach with emphasis on clear communication and criminal procedure expertise.

Jeff Leong, Poon & Wong is a Malaysian law firm founded from an initial three-partner team in 1999 that has grown to 35 lawyers (10 partners and 25 associates). The firm advises on cross-border investments, joint ventures, mergers and acquisitions, capital markets and a range of high-stakes corporate matters, and maintains a regional focus across ASEAN, China and Japan with affiliated relationships in Myanmar, Sarawak, Sabah and Vietnam.

Jenner & Block LLP

England

Jenner & Block’s London office represents clients in significant contentious matters at the intersection of law, business, and politics, and supports clients worldwide in commercial litigation, international arbitration, public law and crisis management, investigations, compliance, and intellectual property. The office emphasizes technical legal skill, commercial insight, sector experience, and a strong tradition of pro bono work.

Jerovšek Malis Law Firm is a Slovenian law firm with an office in Ljubljana. Contact details listed include phone +386 1 292 69 50 and email info@jerovsek-malis.si.

Jia Yuan Law Offices is a China-based law firm with offices in Beijing, Shanghai, Xi’an and Guangzhou. Contact details and office addresses for each location are listed on the firm’s website.

Jimenez Ruiz & Asociados

Colombia

JR&A Jiménez Ruiz & Asociados is a Colombian law firm that delivers personalized, client-centered legal services designed to build long-term commercial relationships and act as strategic partners. The firm emphasizes entrepreneurship, continuous improvement, and a global perspective within a local context.

Jiménez Peña

Dominican Republic

Jiménez Peña is a Dominican Republic law firm established in 2003 that serves local and international businesses with experienced partners and a broad practice platform. The firm is recognized in major legal directories and is TRACE’s Partner Firm in the Dominican Republic for anti-bribery and compliance matters.

Jincheng Tongda & Neal

China

Jincheng Tongda & Neal (JT&N) was founded in Beijing in 1992 and is a full-service Chinese law firm with hundreds of attorneys. The firm operates 17 offices across major Chinese cities, with liaison offices in Hong Kong and Tokyo, and provides multidisciplinary legal services with bilingual capabilities in Chinese and other languages including English and Japanese.

Jingtian & Gongcheng is a law firm with multiple offices across Mainland China and an office in Hong Kong. Location listings include addresses and contact details for offices in Beijing, Shenzhen, Shanghai, Guangzhou, Hangzhou, Chengdu, Nanjing, Chongqing and Hong Kong.

Jipyong LLC

South Korea

Jipyong LLC is a full-service Korean law firm with a global outlook and a network of 11 offices across Asia and beyond, providing legal and consulting services to domestic and international clients. The firm is noted for its strengths in finance (including FinTech and project/structured finance), corporate and M&A work, and dispute resolution, and emphasizes professional excellence, ethics, pro bono work and community service.

Joffe & Partners LLP

England, France

Joffe & Partners is a multidisciplinary law firm founded in 1996 with offices in Paris and London, advising French and international clients on commercial transactions, corporate matters, litigation, arbitration and cross-border issues. The London office provides English law advice (bilingual, dually qualified solicitors) and the firm handles complex international arbitrations and alternative dispute resolution.

Johansson & Langlois

Chile

Johansson & Langlois is a Santiago-based firm founded in 1945 that specializes in industrial and intellectual property, offering legal and technical services across trademarks, patents, industrial designs, copyrights, domain names, geographical indications and technology transfer. The firm comprises attorneys and engineers, maintains international correspondents, and emphasizes personalized service and patent prosecution.

Johnson Stokes & Master

Hong Kong

Johnson Stokes & Master (JSM) is a long-established, pre-eminent law firm based in Hong Kong with representative offices in Beijing and Shanghai and a Beijing IP agency. The firm advises on a broad range of complex deals and disputes involving Hong Kong and mainland China and has a notable banking and finance practice with more than 160 years of history.

Joint-Win Partners is a China-based law firm with multiple offices across Chongqing, Shanghai (Pudong New District), Jiangyin, Hangzhou and Chengdu. Office addresses, phone numbers and contact emails are listed on the firm's website.

Joksovic, Stojanovic & Partners

Serbia

Founded in 1987, Joksovic, Stojanovic & Partners is a full-service Serbian law firm of 13 partners advising international and domestic corporate, governmental and private clients, with principal expertise in corporate and commercial law, foreign investment, M&A, privatization, and cross-border litigation and arbitration. The firm is selected as counsel of choice by the German and Austrian embassies in Belgrade.

Jon Palle Buhl Law Firm

Denmark

Jon Palle Buhl is a Danish law firm advising Danish and foreign companies, foundations, associations, public authorities and private individuals. The firm emphasizes high-level, efficient and client-tailored advice across corporate/commercial, finance, dispute resolution, construction and real estate, private client and insolvency matters, media and IP, and IT/data-protection work.

Jones Day

Australia, Belgium +15

Jones Day is a global law firm with more than 2,400 lawyers in 40 offices across five continents. The firm describes itself as an institutional partner focused on client service, collaboration across offices and practices, and multidisciplinary advice across jurisdictions.