‘S.39 (1) of the Patents Act 1977 provides:
“Notwithstanding anything in any rule of law, an invention made by an employee shall, as between him and his employer, be taken to belong to his employer for the purposes of this Act and all other purposes if –
(a) it was made in the course of the normal duties of the employee or in the course of duties falling outside his normal duties, but specifically assigned to him, and the circumstances in either case were such that an invention might reasonably be expected to result from the carrying out of his duties; or
(b) the invention was made in the course of the duties of the employee and, at the time of making the invention, because of the nature of his duties and the particular responsibilities arising from the nature of
his duties he had a special obligation to further the interests of the employer’s undertaking.”‘
NIPC Law, 2nd July 2014
Source: www.nipclaw.blogspot.co.uk