The Member States 25 March 1957, Consolidated version of the Treaty establishing the European Atomic Energy Community#TITLE II - Provisions for the encouragement of progress in the field of nuclear energy#CHAPTER 2 - DISSEMINATION OF INFORMATION#Section 3 - Security provisions#Article 25

Article 25 1. A Member State notifying the existence or communicating the contents of an application for a patent or utility model relating to a subject specified in Article 16(1) or (2) shall, where appropriate, draw attention to the need to apply a given security grading for defence reasons, at the same time stating the probable duration of such grading.