28.Under section 63(3), the court or comptroller may make it a condition that a partially invalid patent is amended under the 1977 Act before granting relief for infringement. Subsection (1) inserts a new subsection so that relief may be granted on condition that the proprietor of a European patent (UK) limits the patent at the EPO. The limitation would have to be done to the satisfaction of the court or comptroller for relief to be granted. Subsection (2) makes a corresponding change to section 58. Section 58(9) is equivalent to section 63(3), but applies to Crown use instead of infringement.