Schedule 1, paragraph 4(1)
PA 1977
Patents Act 1977 · United Kingdom
The term of every new existing patent under section 22(3) of the 1949 Act shall be twenty instead of sixteen years from the date of the patent, but— the foregoing provision shall have effect subject to section 25(3) to (5) above; and on and after the end of the sixteenth year from that date a patent shall not be renewed under section 25(3) to (5) above except by or with the consent of the proprietor of the patent.
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Source: legislation.gov.uk · retrieved 2026-09-04