7Infringements of patents and registered designs
(1)Subject to the provisions of this section, where at any time within the war period anything was done so as to infringe a patent, or so as to infringe the copyright in a registered design, and at that time there subsisted in the patent or registered design an interest which was then a German enemy interest, the patent or copyright shall, as against any person claiming in right of that interest, be deemed not to have been infringed by the doing of that thing.
(2)The last foregoing subsection shall not apply to an infringement of a patent sealed, or of the copyright in a design registered, in pursuance of an application made on or after the eighth day of April, nineteen hundred and forty-eight.
(3)In relation to an infringement which occurred at a time when an application for the grant of the patent in question was still pending—
(a)the reference in subsection (1) of this section to an interest then subsisting in the patent shall be construed as a reference to an interest then subsisting in the invention to which the application related, and
(b)a person claiming in right of an interest in the patent, being an interest which corresponds to an interest which at the time of the infringement subsisted in that invention, shall for the purposes of that subsection be treated as claiming in right of the latter interest.