Section 58(11)

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 licensee of a patent (the new proprietor or licensee) and a government department or a person authorised by a government department subsequently makes use under section 55 above of the patented invention, the new proprietor or licensee shall not be entitled to any compensation under section 55(4) above (as it stands or as modified by section 57(3) above) , or to any compensation under section 57A above, in respect of a subsequent use of the invention before the transaction, instrument or event is registered unless— the transaction, instrument or event is registered within the period of six months beginning with its date; or the court 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.

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Source: legislation.gov.uk · retrieved 2026-09-04