"68. Where by virtue of a transaction, instrument or event to which section 33 above applies a person becomes the proprietor or one of the proprietors or an exclusive licence of a patent and the patent is subsequently infringed before the transaction, instrument or event is registered, in proceedings for such an infringement, the court or comptroller shall not award him costs or expenses unless— (a) the transaction, instrument or event is registered within the period of six months beginning with its date; or (b) the court or the comptroller is satisfied that it was not practicable to register the transaction, instrument or event before the end of that period and that it was registered as soon as practicable thereafter."
"2.1 The Licensor hereby confirms, and to the extent necessary grants, to the Licensee from the effective date, an exclusive licence of the patent and the designs under the terms of the Licence Agreement. 2.2 The Licensee shall have the right, as exclusive licensee of the Patent and Designs, to bring proceedings for infringement of the Patent and/or Designs and to claim damages or other relief in respect of the infringement of the Patent and/or Designs in respect of any act occurring after the Effective Date. "
“… the holder of an exclusive licence under a patent shall have the same right as the proprietor of the patent to bring proceedings in respect of any infringement of the patent committed after the date of the licence; and references to the proprietor of the patent in the provisions of this act relating to infringement shall be construed accordingly.”