The Legal 500 – Leading Firm in 2021’s Rankings

We are proud to announce that Caiado Guerreiro has again been ranked in 2021’s The Legal 500 annual ranking for Law Firms.

The Legal 500 is an international directory that each year presents its research on law firms based on client feedback and extensive independent research in the market.

Read below our results and client feedback regarding last year’s work.


Caiado Guerreiro offers legal support to clients from a range of sectors, including transport, telecoms, energy and construction, in relation to their inbound and outbound investments. The team is equipped to handle acquisitions, sales, mergers and joint ventures, and also advises on efficient tax structures. In addition to transactional work, the team provides daily assistance to clients in corporate, commercial, regulatory and compliance issues. João Caiado Guerreiro jointly leads the practice with Ricardo Rodrigues Lopes, who is proficient in corporate restructuring and M&A transactions.

Client quotes

‘The team understands clients’ business and solves problems efficiently.’
‘Caiado Guerreiro offers excellent quality services that distinguishes it in the market.’

‘Ricardo Lopes has an admirable set of qualities, including competence, comprehensive knowledge, effectiveness, availability, flexibility, and a collaborative posture. The availability of the founding partner, João Caiado Guerreiro, to give his opinion and monitor some critical issues, contributing expertise and experience, is a great asset.’

‘Quick response, great client service, permanent availability. Ricardo Lopes is recommended.’

‘You always feel like you are in safe hands and that they are on top of everything.’
‘Ricardo Rodrigues Lopes is super responsive, very bright, and pragmatic when he needs to be. I really can’t say enough good things about Ricardo.’


Caiado Guerreiro undertakes transactional work involving the oil and gas, electricity and mining sectors, but is particularly active advising on regulatory matters, administrative proceedings and compliance issues. Department head Jorge Ribeiro Mendonça regularly assists with project development and transactions in the renewables space, namely those pertaining to solar and wind power technology.

Client quotes

‘The technical level of their professionals stands out in the sector. They provide accurate legal advice to international clients on complex legal issues. Clarity, accuracy, and promptness of response are some of the strengths of the team.’

‘Jorge Ribeiro Mendoça provides solid legal advice with accurate and practical solutions. Accuracy, availability, and legal advice for international clients are some of his strengths.’

‘Caiado Guerreiro aims to provide a personalised service. Lawyers have extensive experience and deep knowledge in matters related to energy transactions, more specifically, in the renewables sector.’

‘Jorge Ribeiro Mendonça is an excellent lawyer and negotiator. He is always exploring different perspectives aiming to find the solution in the interest of the client. Jorge is also fluent in English, which helps a lot.’


Caiado Guerreiro has a strong background in patent enforcement and litigation, acting for key players in the pharmaceutical sector. The team, which is adept at assisting with the protection across the full range of IP rights, stands out in trade mark prosecution and administrative proceedings, unfair competition and plant variety right matters. The department is under the leadership of Ricardo Costa Macedo, who is noted for his experience in representing pharmaceutical companies in contentious matters before arbitration and judicial courts.

Client quotes

‘The firm gives practical, no-nonsense advice; quickly grasps the instructions and work with us to implement (and refine as necessary) the strategy.’

‘Ricardo Costa Macedo is very experienced and has sound judgement.’

‘All the support provided in matters pertaining to trade mark registration was outstanding.’

‘Ricardo Costa Macedo is the main point of contact for all IP matters. He stands out for his attention to detail, close monitoring of issues and focus on the client’s interests. We would also like to highlight his availability as well as his technical knowledge of issues related to intellectual property: both in terms of trademarks as well as the protection of business secrets.’

‘Prompt answers, professional treatment of clients, and permanent availability.’

‘We received clearly drafted documentation and our matters were handled promptly and efficiently.’


Caiado Guerreiro is adept at assisting with disputes in Portugal and abroad (with a special emphasis on Portuguese-speaking countries). Litigation, arbitration and out-of-court settlements are all notable areas of practice. Clients have access to an interface platform (VICKI) and a CRM software made available by the firm; these tools are particularly useful in mass litigation since they allow clients to be kept up-to-date with the latest developments in judicial proceedings. The litigation and arbitration team is led by Sandra Ferreira Dias and João Caiado Guerreiro, who specialise in civil and commercial disputes.

Client quotes

‘The team studies the cases in great detail. Sandra Jesus is very attentive.’


Caiado Guerreiro’s work in restructuring and insolvency is led by João Caiado Guerreiro and Sandra Ferreira Dias, with strength in contentious matters and cross-border instructions. Real estate, media and finance are all sectors frequently covered by the team.


Caiado Guerreiro’s employment team has been involved in major restructuring processes taking place in the Portuguese market, demonstrating significant experience in collective dismissals and lay-off procedures. The department has recently been particularly active representing companies in the termination of employment contracts in respect of directors and senior employees. Ricardo Rodrigues Lopes, whose specialisms include labour disputes, jointly leads the practice with Jorge Ribeiro Mendonça, who stands out for his transactional experience.

Client quotes
‘Immediate availability to resolve any legal issue. Matters have always been dealt with effectively and very professionally.’

‘Total availability to answer questions and committed to always find the best solutions for the client.’

‘Competence, availability and speed.’

‘Ricardo Rodrigues Lopes is a great lawyer.’


Caiado Guerreiro provides a range of tax services, working on recent matters for a number of HNWIs as well as companies in the real estate sector. Tax structuring advice and litigation are both commonly handled by practice heads Tiago Caiado Guerreiro and Ana Castro Gonçalves and their team. Tânia Pinheiro and Tatiana Cardoso head the German and French desks, respectively.

Client quotes
‘In-depth knowledge of tax matters.’

‘I was attended to promptly, quickly and impeccably! The availability was surprisingly remarkable at all levels, even on non-working days of the week, which surprised me immensely and we established a close relationship very quickly.’


Ricardo Rodrigues Lopes leads work in the TMT industry for Caiado Guerreiro, which advises its domestic and international clients on a range of matters, including regulation of electronic communications, acquisition and licensing of software, e-commerce, data protection and IP matters.


publicado en abril+21,+2021