About us — Criminal defence lawyers in Amsterdam

Meet our criminal defence lawyers in Amsterdam. Experienced, discreet and fully dedicated to criminal law — from duty-solicitor assistance to cassation. Get in touch in confidence.

Mr. J.M. (Johan) Keizer

Criminal law lawyer · founder

Studied Dutch Law (Criminal Law specialisation) at the University of Amsterdam and was sworn in as a lawyer in Amsterdam in 2005. In 2011 he completed the specialist training of the Willem Pompe Institute and is entitled to call himself a criminal law specialist. Member of the Netherlands Association of Criminal Law Lawyers (NVSA).

Guest on BNR Napleiten

Mr. Johan Keizer was a guest on episode 81 of Napleiten, the criminal law podcast of Dutch broadcaster BNR Nieuwsradio, hosted by crime journalist Wouter Laumans and criminal defence lawyer Christian Flokstra. In it, he discusses a case in which he acted for the defence: a man who, in March 2020, assaulted a woman in Amsterdam's red-light district (De Wallen) so severely that she fell into a coma.

Listen to episode 81 (in Dutch): Dodelijk geweld op De Wallen →

Register of legal practice areas

Johan Keizer is registered with the Netherlands Bar (Nederlandse Orde van Advocaten) for the following areas of law:

Criminal law

  • General criminal law — property and violent offences, sexual offences, fraud/deception, Road Traffic Act, Opium Act, Weapons and Ammunition Act
  • Financial-economic criminal law
  • Tax criminal law
  • Environmental criminal law
  • TBS (hospital order)
  • Juvenile criminal law

This registration requires him to obtain ten training credits every calendar year in each registered principal area of law, in accordance with the standards of the Netherlands Bar.

Mr. M.B. (Marte) Mobach

Criminal law lawyer

Obtained her master’s degree in criminal law at Utrecht University in 2021. She then worked for almost four years as a senior court lawyer at the ’s-Hertogenbosch Court of Appeal, on a wide range of criminal cases — from violence and property offences to sexual-offence, Opium Act and traffic cases. She was part of the juvenile criminal chamber and the recusal chamber, and as a result has a sharp understanding of judicial decision-making.

Register of legal practice areas

Marte Mobach is registered with the Netherlands Bar (Nederlandse Orde van Advocaten) for the following areas of law:

Criminal law

  • General criminal law

On the basis of this registration she is required to obtain ten training credits every calendar year in each registered principal area of law, in accordance with the standards of the Netherlands Bar.