http://www.legislation.gov.uk/uksi/1997/64/article/6/madeThe Patents (Supplementary Protection Certificates) Rules 1997English languageKing's Printer of Acts of Parliament2015-03-17PATENTS Council Regulation (EEC) No. 1768/92 (a copy of which is set out in Part 1 of Schedule 1 to these Rules) created, and set out the conditions relating to applications for and the grant of, a supplementary protection certificate for medicinal products. Such a certificate, when granted, extends the protection afforded by a patent (“the basic patent”) in respect of a medicinal product covered by it for a period which extends to a period not more than five years from the date when it takes effect. The Patents (Supplementary Protection Certificates) Rules 1997The Patents Rules 2007rule 120 sch 6The Patents (Supplementary Protection Certificates) Rules 1997 rule 7(3)(i)(iii) The Patents (Supplementary Protection Certificates) Rules 1997 rule 11 PART II 6 If the certificate is surrendered or declared invalid on or with effect from a date earlier (“the earlier date”) than the date of expiry of the effective period, where the appropriate fees in respect of that period have been paid, the comptroller shall remit the fee paid in respect of any effective year which falls after the end of the effective year (if any) into which the earlier date falls.