32 No. 10 Patents and Industrial Designs Act 2012 (2) If the licence contract provides that such contract or the permission granted by it is exclusive, the licensor may neither grant to any third person to do any of the acts referred to in sections 22 and 57 and covered by the licence contract, or do himself any of those acts; and the licensee shall be considered as an exclusive licensee for the purposes of this Act. Surrender of patent or industrial designs. 64. owner. (1) A patent or industrial design may be surrendered by its (2) The surrender may be limited to one or more claims of the patent or industrial design. (3) The surrender shall promptly be recorded in the Register and published by the Registrar and the surrender shall be effective only after it has been published. (4) If a licence has been recorded in the Register, surrender of the patent or industrial design shall only be registered upon the submission of a declaration by which the licensee consents to the surrender, unless the licensee expressly waived this right in the licence contract. Invalidation of patent or industrial designs. 65. (1) Any interested person may request the court to invalidate a patent or industrial designs. (2) The court shall invalidate the patent or industrial design if the person requesting the invalidation proves that the patent or industrial design is not patentable or registrable under this Act or if the owner of the patent is not the inventor or his successor in title or if the owner of the industrial design is not the creator or his successor-in-title. (3) Any invalidated patent or industrial design or claim or part of a claim, shall be void from the date of the grant of the patent or industrial design. (4) The decision of the court shall be notified to the Registrar who shall record it and publish a reference to it as soon as possible. No. 10 Patents and Industrial Designs Act 33 2012 66. (1) The Registry shall maintain a register for patents and Registrar to keep register utility model certificates. (2) All the recordings provided for under this Act shall be recorded in the register. of patents and utility model certificates. (3) The register shall be open to the public and a person may obtain an extract from the register in the prescribed manner. 67. (1) The Registrar shall maintain separate registers for Registers of patents and patents and industrial designs. (2) The Registers may be consulted by any person, and any person may obtain extracts from the Registers under the prescribed conditions. industrial designs 68. The Registrar may correct any error of translation or Correction of transcription, clerical error or mistake in any application or document errors. filed with the Registry or in any recording effected pursuant to this Act. 69. Where the Registrar is satisfied that the circumstances Extention of justify it, he may, upon receiving a written request, extend the time for time. doing any act or taking any proceeding under this Act, upon notice to the parties concerned and upon the terms as the Registrar may direct. 70. The Registrar shall publish in the Gazette all the Publication in the Gazette publications provided for in this Act. 71. Subject to subsection (1) of section 23 and subsection (3) Infrigement. of section 50, an infringement shall consist of performance of any act referred to in sections 22 and 57 in Sierra Leone by a person other than the owner of the title of protection and without the consent of the owner. 72. On the request of the owner of the patent or industrial Relief. design, the court may grant-