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50. Rights of co-owners of patents.—

(1) Where a patent is granted to two or more persons, each of those persons shall, unless an agreement to the contrary is in force, be entitled to an equal undivided share in the patent.

(2) Subject to the provisions contained in this section and in section 51, where two or more persons are registered as grantee or proprietor of a patent, then, unless an agreement to the contrary is in force, each of those persons shall be entitled, by himself or his agents, to [rights conferred by section 48] Subs. by Act 38 of 2002, s. 26, for “make, use, exercise and sell the patented invention” (w.e.f. 20-5-2003) for his own benefit without accounting to the other person or persons.

(3) Subject to the provisions contained in this section and in section 51 and to any agreement for the time being in force, where two or more persons are registered as grantee or proprietor of a patent, then, a licence under the patent shall not be granted and share in the patent shall not be assigned by one of such persons except with the consent of the other person or persons.

(4) Where a patented article is sold by one of two or more persons registered as grantee or proprietor of a patent, the purchaser and any person claiming through him shall be entitled to deal with the article in the same manner as if the article had been sold by a sole patentee.

(5) Subject to the provisions contained in this section, the rules of law applicable to the ownership and devolution of movable property generally shall apply in relation to patents; and nothing contained in sub-section (1) or subsection (2) shall affect the mutual rights or obligations of trustees or of the legal representatives of a deceased person or their rights or obligations as such.

(6) Nothing in this section shall affect the rights of the assignees of a partial interest in a patent created before the commencement of this Act.