26. Assignment and Transfer of Patent Applications and Patents:
(1) Patent applications and patents may be assigned or transferred by
succession.
(2) The assignment of patent applications and patents shall be made in
writing and shall require the signatures of the contracting parties.
(3) Assignments, or transfers by succession, of patent applications and
patents shall be registered in the Patent Office on payment of a fee as
prescribed in the Regulations; assignments shall have no effect against
third parties until such registration.
27. Joint Ownership of Patents:
In the absence of any provision to the contrary between the parties, joint
owners of a patent may, separately, transfer their parts, exploit the
patented invention, and exercise the rights granted under Section 21, but
may only jointly grant a license to a third party to exploit the patent.
Chapter Eight: Contractual Licenses
28. License Contracts:
(1) The applicant for or owner of a patent may, by contract, grant to some
otner person or undertaking a license to exploit his invention.
(2) A license contract must be in writing and shall require the signatures
of the contracting parties.
(3) Every license contract must be registered in the Patent Office, on
payment of a fee as prescribed in the Regulations; the license shall have
no effect against third parties until such registration.
29. Right of Licensor to Grant Further Licenses
(1) In the absence of any provision to tne contrary in the license contract,
the grant of a license shall not prevent the licensor from granting further
licenses to third persons, or from exploiting the invention himself.
(2) The grant of an exclusive license shall prevent the licensor from
granting licenses to third persons and, in the absence of any provision to
the contrary in the license contract, from exploiting the invention himself.
30. Rights of Licensee:
In the absence of any provision to the contrary in the license contract, the
licensee shall be entitled to exploit the invention during the whole duration
of the patent, in the entire territory of the Democratic Republic of the
Sudan, through any application of the invention, and in respect to all the
acts referred to in Section 21.
Non-Assignability of Licenses: