PART XII DIRECTIONS TO CO-OWNERS 59. Application under subsection (6) of section 47 60. Application under subsection (7) of section 47 PART XIII DISPUTES AS TO INVENTIONS MADE BY EMPLOYEES 61. Application under subsection (1) of section 48 62. Hearing PART XIV SURRENDER OF PATENT Regulation 63. Form of offer to surrender a patent 64. Opposition PART XV REGISTER OF PATENTS 65. Register to record grant of patents 66. Alteration of entries 67. Registration of assignments, etc. 68. Copies of documents 69. Correction of errors 70. Advertisement 71. Opposition 72. Certified copies of entries, etc.