JUDGMENT OF THE COURT (Sixth Chamber) of 12 June 1997 in Case C-110/95 (reference for a preliminary ruling from the High Court of Justice, Chancery Division, Patents Court): Yamanouchi Pharmaceutical Co. Ltd v. Comptroller-General of Patents, Designs and Trade Marks (Council Regulation (EEC) No 1768/92 - Supplementary protection certificate for medicinal products - Scope of Article 19)