João Caiado Guerreiro > Caiado Guerreiro > Lisbon, Portugal > Lawyer Profile

Caiado Guerreiro
RUA CASTILHO, Nº 39, 15º
1250-068 LISBON

Work Department

Corporate and M&A, Dispute Resolution, Capital Markets, Banking and Finance and Foreign Direct Investment.


Managing Partner


João Caiado Guerreiro is a lead partner of the Corporate and M&A and Litigation & Arbitration departments, also coordinating the teams of Capital Markets, Banking and Finance, Project Management, Foreign Investment and Corporate Governance.

João Caiado Guerreiro has been responsible for a significant number of operations and projects of large size and complexity in his areas of expertise in Portugal and abroad. He has extensive experience in mergers and acquisitions, and is a consultant to some of the most important national and international companies operating in Portugal and President of the Shareholders’ General Assembly of several of the largest companies based in Portugal.

João Caiado Guerreiro is one of the lawyers with greater notoriety in the country in the area of capital markets and mergers and acquisitions having become noticed especially in major national and international projects and having his practice recognized by major international directories. João Caiado Guerreiro has participated in major transactions in the areas of project finance, securitization, investment funds and derivatives.

He is frequently invited as a speaker at several national and international conferences and is a regular commentator of business and law at major national television channels, such as RTP, SIC and TVI. Also, João Caiado Guerreiro often writes articles for national and international publications within his areas of expertise.


Portuguese, English, French and Spanish.


João Caiado Guerreiro is a member of the Portuguese Bar Association (Ordem dos Advogados), as well as of the Brazilian Bar Association – São Paulo (OAB).

He is a member of the International Bar Association (IBA), of the Institute of Advanced Legal Studies of the University of London, King’s College Alumni Association and of the American Bar Association (ABA). He is also the firm’s representative member at the International Association of Lawyers (UIA).

Additionally, João is one of the founders of the Portuguese Property Owners Association (APPROP) and acts currently as its President.


Law Degree
Faculty of Law of the University of Lisbon

LL.M in International Business Law
King’s College, London

Lawyer Rankings

Portugal > Commercial, corporate and M&A

Jointly led by João Caiado Guerreiro and Ricardo Rodrigues Lopes, Caiado Guerreiro‘s corporate and M&A team handles a mix of acquisitions and disposals, mergers and joint ventures in a range of sectors, including chemicals, energy, telecoms, media and construction. Additionally, its practitioners provide assistance to core clients in an array of corporate law, regulatory and compliance matters. Co-head Rodrigues Lopes has noteworthy experience in cross-border transactions, corporate restructuring and contractual issues.

Portugal > Dispute resolution

Praised by clients for providing ‘outside the box‘ and ‘innovative solutions’ in the context of dispute resolution, Caiado Guerreiro handles a range of corporate and commercial litigation, as well as arbitration proceedings. Assisting clients with out-of-court contentious matters is another core area of activity for the department, which is under the joint leadership of João Caiado Guerreiro and Sandra Ferreira Dias. Both have extensive experience in judicial and arbitral cases. Sandra Jesus is also noted; she is a point of contact for several domestic and international clients involved in litigation and arbitration.