Van Hilten Advocaten & Mediators closes down as of November 1st

The partners of Van Hilten Advocaten & Mediators at Amsterdam and The Hague have by mutual agreement decided to end their collaboration.

Emma Kostense will continue her current practice at the law firm SmeetsGijbels in (1071 KP) Amsterdam at the Jacob Obrechtstraat 70 (see

Willem de Vries will continue his current practice at the law firm ScheerSanders Advocaten in (2585 ED) The Hague at the Nassauplein 36 (see

Margreet Ruijgrok, Monique Beijersbergen, Coen van den End, Sabrina De Jong en Zoë Vis will launch a new law firm named Silk Advocaten en Mediators. Silk Advocaten en Mediators will be located at the current address in (1075 HJ) Amsterdam at De Lairessestraat 129 and in (2596 AL) The Hague at the Zuid Hollandlaan 7 (Spaces) (see

Edith van Ruitenbeek will discontinue her law practice and will focus on other professional activities.

Raya Oranje-Jorna will launch a law firm in (2514 AB) The Hague at the Koninginnegracht 19, named Raya Jorna Advocaat en Mediator (see

van Hilten Advocaten & Mediators over ons
Emma Kostense

Emma Kostense


  • Attorney since August 1976
  • ADR mediator since September 2011
  • Registered mediator (NMI) since 1999
  • Certified collaborative divorce attorney since 2011


  • Strategic Coaching (2016)
  • Commissarissen Cyclus Nyenrode (2011)
  • Training Collaborative Divorce attorney (2011)
  • Mediation Training NMI (1999)
  • Dutch Law, University Leiden (graduated in 1976)


  • July 2012 - until present: Founder/partner/attorney Van Hilten Advocaten & Mediators (previous Van Hilten de Vries van Ruitenbeek Advocaten & Mediators), The Hague and Amsterdam
  • 1988 until 1 July 2012: Founder/partner/attorney Krans & Van Hilten Attorneys, The Hague
  • 1980 until 1988: Attorney Pels Rijcken & Droogleever Fortuijn, The Hague
  • 1976 until 1980: Attorney Houthoff Buruma, Rotterdam

Additional activities:

  • Member WOCD-commission with regard to the position of the victim in the criminal trial (2012)
  • Member LetMe Mediators (2004-2012)
  • Chairman Departement 's-Gravenhage van de Maatschappij (2000-2008)
  • Member Kwaliteitscommissie LSA (2000-2008)
  • Congresschairperson ANP-congres (personal injury) (2008)
  • Member Board of Discipline The Hague (2002-2007)
  • Talks/interviews regarding family law, personal injury, mediation and Collaborative Divorce
  • Member Supervisory Council The Hague Bar (1990-1997)
  • Supervisory Council Provinciale Kruisvereniging Zuid-Holland (the ‘80s)
  • Board Haagse Kruisvereniging (the ‘80s)
  • Member Young Bar Cabaret The Hague (1980-1983)
  • Member Young Bar Rotterdam (end ’70s)
  • Boardmember/chairman several music and theatre groups

Other additional activities:

  • Deputy Justice Amsterdam court (2001- present)
  • Deputy Justice Arnhem-Leeuwarden court, Leeuwarden (2001 – present)


  • NMI (Dutch Mediation Institute)
  • ADR International Register
  • VCDH (Society Collaborative Divorce Holland)
  • IACP (the International Academy of Collaborative Professionals)
  • De Nieuwe of Littéraire Sociëteit De Witte
  • De Maatschappij
  • H.L.T.C. Leimonias (tennisclub)

Opera, classical music, cabaret, theatre plays, reading, tennis, jogging