Copyright, Designs and Patents Act 1988

20 For section 76 of the [1977 c. 37.] Patents Act 1977 (amendments of applications and patents not to include added matter) substitute—

“76 Amendments of applications and patents not to include added matter

(1) An application for a patent which—

(a) is made in respect of matter disclosed in an earlier application, or in the specification of a patent which has been granted, and

(b) discloses additional matter, that is, matter extending beyond that disclosed in the earlier application, as filed, or the application for the patent, as filed,

may be filed under section 8(3), 12 or 37(4) above, or as mentioned in section 15(4) above, but shall not be allowed to proceed unless it is amended so as to exclude the additional matter.

(2) No amendment of an application for a patent shall be allowed under section 17(3), 18(3) or 19(1) if it results in the application disclosing matter extending beyond that disclosed in the application as filed.

(3) No amendment of the specification of a patent shall be allowed under section 27(1), 73 or 75 if it—

(a) results in the specification disclosing additional matter, or

(b) extends the protection conferred by the patent.”.