Leonie is a partner at Dillinger Law. B.V., a boutique law firm focused on the sectors Sports, Entertainment and Fashion. She specializes in trademark, copyright, trade name, design, advertising, unfair commercial practices and media law. She has written several publications about intellectual property law, unfair commercial practices and intellectual property related civil procedure measures, which have been published in legal and branch journals, and legal commentaries. 

Leonie has a lifelong passion for sport and has participated in various sport related fundraising activities, such as the Ladies Run (for Women Win), and the cycling event Alpe d'HuZes (for KWF Kankerbestrijding).