The drug rehabilitation group Le Patriarche, now known as Dianova International, was founded in France in 1974 by Lucien Engelmajer in Saint-Paul-sur-Save, near Toulouse. Its name referenced the founder’s surname, and it adopted a communal living model centered on drug-free withdrawal without chemical substitutes.
During the 1970s and 1980s, the association expanded as specialized treatment facilities for drug addiction were limited and HIV cases were increasing. Its approach relied on peer supervision and the motto “help, to be helped,” promoting re-socialization through manual labor and community service. By the early 1990s, the organization operated 210 centers in 17 countries and reported a population of more than 5,000 residents.
As it grew, the group faced scrutiny over its structure and methods. Critics described the leadership of Engelmajer as centralized and raised concerns about the absence of qualified medical staff. Questions were also raised about the use of unpaid resident labor to sustain operations. In 1995, a French government report classified Le Patriarche as a sect. Former residents and observers alleged that the organization fostered strong personal loyalty to Engelmajer and relied on vulnerable individuals for unpaid work and ideological commitment.
Further allegations emerged in the mid-1990s. Investigations involved claims of embezzlement, physical violence and sexual abuse of residents, including minors. Witnesses described an environment in which teenagers were encouraged to participate in protests linked to legal proceedings involving the organization. There were also unverified reports of unauthorized medical experiments related to HIV treatments.
In 1998, amid administrative pressure, Engelmajer resigned. The association undertook a restructuring process and rebranded as Dianova International, seeking to distance itself from its earlier model and its founder.
Legal proceedings related to the organization’s earlier period continued. In 2007, a court in Toulouse convicted Engelmajer in absentia of abuse of vulnerable persons, breach of trust, forgery and money laundering. He was sentenced to five years in prison. That same year, he died in Belize after leaving France while facing arrest warrants.
Following its restructuring, Dianova International moved toward a professional NGO framework. It abandoned the original “Patriarche” model, adopted a corporate-style structure and sought recognition at the international level. In 2007, the same year as Engelmajer’s conviction and death, the organization obtained special consultative status with the United Nations Economic and Social Council.
The former headquarters at “La Boëre” in Saint-Paul-sur-Save were later demolished and replaced with housing. Under the name Dianova International, the organization continues to operate drug prevention and treatment programs in multiple countries.
Key Sources:
Favereau, E. (1998, March 27). Mais où est passé le patriarche? Le fondateur contesté de l’association de lutte contre la toxicomanie a été démis de ses fonctions. Libération.
Quiet, P. (2015). In the House of Le Patriarche. CreateSpace Independent Publishing Platform.
Encyclopedia of Cults, Sects, and New Religious Movements 