s 73 Proceedings for infringement by co-owner
73.—(1) In the application of section 66 to a patent of which there are 2 or more joint proprietors, the reference to the proprietor is to be construed —(a) in relation to any act, as a reference to that proprietor or those proprietors who, by virtue of section 46 or any agreement mentioned in that section, is or are entitled to do that act without its amounting to an infringement; and (b) in relation to any consent, as a reference to that proprietor or those proprietors who, by virtue of section 46 or any such agreement, is or are the proper person or persons to give the requisite consent. (2) One of 2 or more joint proprietors of a patent may without the concurrence of the others bring proceedings in respect of an act alleged to infringe the patent, but must not do so unless the others are made parties to the proceedings; but any of the others if made a defendant shall not be liable for any costs or expenses unless the defendant files and serves a notice of intention to contest or not contest and takes part in the proceedings.[Act 25 of 2021 wef 01/04/2022]