Section 11

When any person becomes entitled by assignment, transmission or operation of law to the privileges and rights conferred by a certificate of registration or to a share therein or becomes entitled as mortgagee, licensee or otherwise to any other interest therein, he or the assignor, mortgagor, licensor or other party to the instrument creating such interest may make application in the prescribed manner to the Registrar of Patents for the entry on the Register of Patents of particulars of such assignment, transmission, mortgage, licence or other instrument or of any event affecting the title or giving an interest therein.

A document in respect of which no entry has been made in the Register of Patents under this section shall not be admitted in any court as evidence of the title of any person to the privileges and rights conferred by a certificate of registration or to a share thereof or interest therein unless the court otherwise directs.