In the application of section 21(1) (observations by third party on patentability) to supplementary protection certificates, the reference to the question whether the invention is a patentable invention is to the question whether the product is one for which a supplementary protection certificate may have effect.

In the application of section 69(2) (conditions for infringement of rights conferred by publication of application) to supplementary protection certificates, the condition in paragraph (b) is that the act would, if the certificate had been granted on the date of the publication of the application, have infringed not only the certificate as granted but also the certificate for which the application was made.