Any owner of an invention patent having effect in France and relating to a medicinal product, a process for obtaining a medicinal product, a product necessary for obtaining such a medicinal product or a process for manufacturing such a product may, where these are used for the production of a pharmaceutical speciality which is the subject of a marketing authorisation in accordance with the articles L. 601 or L. 617-1 of the Public Health Code, and from the date of its issue, obtain, in the forms and conditions laid down by this book and specified by decree in the Conseil d’Etat, a supplementary protection certificate for those parts of the patent corresponding to this authorisation.