1.The period of validity of import permits issued in accordance with Articles 20 and 21 shall not exceed 12 months. An import permit shall, however, not be valid in the absence of a valid corresponding document from the country of export or re-export.
2.The period of validity of export permits and re-export certificates issued in accordance with Article 26 shall not exceed six months.
3.The period of validity of the travelling exhibition certificates and personal ownership certificates issued in accordance with in Articles 30 and 37 respectively shall not exceed three years.
4.After their expiry, the permits and certificates referred to in paragraphs 1, 2 and 3 shall be considered as void.
5.Travelling exhibition certificates or personal ownership certificates shall cease to be valid if the specimen is sold, lost, destroyed or stolen, or if ownership of the specimen is otherwise transferred, or, in the case of a live specimen, if it has died, escaped or been released to the wild.
6.The holder shall, without undue delay, return to the issuing management authority the original and all copies of any import permit, export permit, re-export certificate, travelling exhibition certificate or personal ownership certificate which has expired or which is unused or no longer valid.