Article 12 Revocations Original text. Later amendments are not shown. The Patents (Supplementary Protection Certificate for Medicinal Products) Rules 1992f1 and the Patents (Supplementary Protection Certificate for Medicinal Products) (Amendment) Rules 1993f2 are hereby revoked. Annotations Footnotes f1 S.I. 1992/3162. f2 S.I. 1993/947. ← Article 11 Article 12 Signature →