63. 64. 65. PART XIV SURRENDER, INVALIDATION AND REVOCATION Surrender of patents. Invalidation of patent. Effects of invalidation. 66. 67. 68. 69. 70. 71. 72. PART XV INFRINGEMENT Acts constituting infringement. Relief. Declaration of non-infringement. Threat of infringement proceedings. Criminal proceedings. Presumption of use of patented process. Legal proceedings by licensee. 73. 74. 75. PART XVI UTILITY CERTIFICATES Applicability of provisions relating to patents. Special provisions relating to utility certificates. Conversion of patent applications or applications for utility certificates. 76. 77. 78. 79. 80. 81. PART XVII UNITED KINGDOM DESIGNS (PROTECTION) Rights in Tanzania of proprietor of design registered in United Kingdom. Innocent infringer not liable for damages. Grounds upon which Court may declare that rights have not been acquired in Tanzania. PART XVIII MISCELLANEOUS PROVISIONS Regulations. [Repeal of R.L. Cap. 217.] Saving and transitional provisions. CHAPTER 217 THE PATENTS (REGISTRATION) ACT An Act to provide for the Patents Registration Act so as to make better provisions for the promotion of inventivity and innovation for the facilitation of the acquisition of technology on fair terms through the grant and regulation of patents, utility certificates and innovation certificates. [1st September, 1994] i 1 [G.N. No. 457 of 1994] Acts Nos. 1 of 1987 13 of 1991 14 of 1999 Ord. No. 25 of 1936 [R.L. Cap. 219] G.N. No. 262 of 1995