The firm

About JK Law Advogados

A Portuguese law firm based in Cascais, serving Lisbon and the whole country, in person and remotely, in three areas: immigration and Portuguese citizenship, criminal defence, and corporate law. We serve clients across Europe, the Americas and beyond.

The team

Photo of Dr. Klaus Luchtenberg

Lawyer · Founding partner

Dr. Klaus Luchtenberg

A multi-jurisdictional lawyer and executive, specialised in criminal and immigration law, with over 15 years of experience across Brazil, Portugal and international markets, and cases handled in the United States as well. Licensed to practise law in Portugal and Brazil.

Lead counsel in complex proceedings of international reach, from cross-border drug trafficking to aggravated fraud and money laundering, with a specialisation in extradition.

To that path he adds solid experience in business management, corporate structuring, labour law and international operations, both advising clients directly and inside corporate strategy.

  • Portuguese Bar Association · bar ID 58.638/L
  • Brazilian Bar Association (OAB) · 40.102/SC
  • Specialist in extradition and the European Arrest Warrant
  • Cases in Portugal, Brazil and the United States
Photo of Jeff Silva

Founding partner · International legal consultant

Jeff Silva

The bridge between those arriving and the Portuguese system. He follows people who move countries, invest or open businesses in Portugal, from the first contact to the decision, translating bureaucracy into clear steps.

A law graduate of Universidade Autónoma de Lisboa, he specialised in immigration and corporate law, exactly the two subjects of anyone building a new life in another country. A postgraduate degree in Sports Law adds the experience of international proceedings involving athletes and clubs.

In the firm’s criminal cases he acts as an expert in the legal analysis of economic crime, from aggravated fraud to money laundering, preparing the defence strategy alongside Dr. Klaus.

  • Expert in legal analysis of economic crime
  • Law degree, Universidade Autónoma de Lisboa
  • Specialist in immigration and corporate law
  • Postgraduate degree in Sports Law

Address and contacts

JK Law Advogados
Av. de São Miguel 296, atelier 10, CW-1
2775-750 Carcavelos, Portugal

Phone: +351 914 383 971
Email: geral@advogadoonline.pt

Monday to Friday, 9:00 to 18:00 (Lisbon time)

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Remote service, worldwide

Most of our international clients never set foot in the office before their case is solved. Video calls, digital documents and WhatsApp keep the process moving wherever you are, in your time zone.