Mr. Coumans has practiced criminal law since 1989 and is one of the founders of the firm. He focuses primarily on community criminal cases, such as major drug investigations, hemp plantations and deprivation proceedings. He also deals with psychiatric patient law.

He is a member of the NVSA (Dutch Association of Criminal Lawyers).

Mr. Coumans has registered the following main specializations in the Register of Jurisdictions of the Netherlands Bar Association:

• Criminal Law

Pursuant to this registration, he is required to obtain ten training points in each registered main area of law each calendar year according to the standards of the Dutch Bar Association.