An International Trade Boutique Law firm is born to address the demand for more efficient, modern and personalized services in the face of prevalent large mass law firms.

Our boutique office model boasts over 25 years of combined of experience, demonstrated by our track record of handling emblematic processes and successful cases which resulted in multiple awards and market recognition.

Our history has led us to establish M&W Trade as a leading boutique law firm in international trade, known for our emphasis on direct contact with partners, personalized service, and tailored solutions for each case.



Andrea Weiss Balassiano

An international trade lawyer with over 25 years of expertise in trade defense investigationsShe is the only Brazilian member of SAWTR - Strategic Alliance on WTO and Trade Remedies Law and Practice, an association that brings together leading legal professionals in the field of international trade around the world.
She is also a member of the Trade Defense Commission of the Federation of Industries of the State of Rio de Janeiro ("FIRJAN") and the Women Inside Trade Organization (WIT).
Andrea is widely recognized in the legal market, both in Brazil and internationally, as a prominent lawyer in the field of international trade and WTO, esteemed by clients and peers alike.

Carol Monteiro de Carvalho

Active lawyer with distinguished career spanning 25 years, marked by her unparalleled expertise in the most significant and emblematic trade defense investigations in Brazil. 
Widely recognized in the legal market and revered by her peers, Carol is renowned for her exceptional proficiency in international trade and  WTO. 
Her international experience as a Brazilian lawyer in London, UK has further enriched her skill set and established her as a prominent figure within the global legal community. 
Carol holds prestigious leadership roles, serving as the Director of the International Trade Committee of IBRAC – Brazilian Institute of Studies on Competition, Consumption and International Trade, and as the esteemed Co-Chair of the International Trade and Customs Law Committee of the IBA – International Bar Association.


The largest bridge in the world connects Hong Kong to the city of Zhuhau and Macau, in China

Representation of Brazilian and foreign clients in administrative and judicial proceedings in Brazil and abroad, especially in trade remedies disputes (anti-dumping investigations, subsidies and countervailing measures and safeguards). Legal assistance in international negotiations and preferential treatment in trade agreements.

International Trade

Customs Law

Consultancy in foreign trade operations: temporary and permanent tariff reduction, trade facilitation, customs valuation and rules of origin. Analysis of administrative treatment in international trade operations and compliance with the specific requirements before customs authorities and agencies.


Consultancy in trade disputes before the Dispute Settlement Body of the World Trade Organization (WTO). Legal advice on international trade practices in relation to the WTO agreements.