s 61 Duty to inform patentee
61.—(1) Where any thing set out in section 66(1) is done in relation to a patented invention by the Government or a party authorised in writing by the Government for a public non-commercial purpose, the Government department that did or authorised the doing of the thing must inform the patentee promptly of the doing of the thing. (2) Where any thing set out in section 66(1) is done in relation to a patented invention by the Government or a party authorised in writing by the Government for or during a national emergency or other circumstances of extreme urgency, the Government department that did or authorised the doing of the thing must, as soon as reasonably practicable, inform the patentee of the doing of the thing.