An Vijverman studied law at the Université de Namur (formerly called FUNDP) and at Queen Mary and Westfield College of the University of London. She graduated in law cum laude at the KU Leuven (1997). In the same year she was called to the Brussels Bar and started her internship at the law firm Loeff Claeys Verbeke (currently Allen & Overy). After her internship she worked at the law firm Lontings & partners (currently Lydian) that she left in 2004 as senior associate to become partner with our law firm.
Within medical law An specialises in privacy legislation (data protection), eHealth, RIZIV/INAMI procedures (national sickness and invalidity insurance institute), pharmaceutical law, medical applications and life sciences. The assistance of pharmaceutical companies and companies active in biotechnology, medical devices and healthcare ICT is at the core of her practice. She has a cross-border reputation concerning the protection of health related data. Herbert Smith, one of the world's largest law firms, has selected Dewallens & partners as a partner in privacy law for Belgium. Through her dedication Dewallens & partners became the Belgian member of the Alliance of European Life Sciences Law Firms in 2015.
An is keen on publishing about electronic health records, pharmaceutical law and medical devices. In 2013 she published her book called “Het elektronisch medisch dossier. Praktische en juridische knelpunten” (The electronic medical file. Practical and legal issues). Each year she also publishes the “Chapter for Belgium in “Getting the Deal Through – Life Sciences”. An regularly lectures, she teaches health law at Ehsal Management School and at Ahlec, the Antwerp Health Law and Ethics Chair at the UAntwerpen and as a trainer she is attached to the European Centre for Clinical Research Training. She is a member of the National Commission on the evaluation of the legislation concerning the interruption of pregnancy and of the editorial committee of the 'Tijdschrift voor Gezondheidsrecht' (Journal for Health Law).