Surrender, revocation and invalidity
Surrender
Article 57 - Surrender
Grounds for revocation
Article 58 - Grounds for revocation
Grounds for invalidity
Article 59 - Absolute grounds for invalidity
Article 60 - Relative grounds for invalidity
Article 61 - Limitation in consequence of acquiescence
Consequences of revocation and invalidity
Article 62 - Consequences of revocation and invalidity
Proceedings in the office in relation to revocation or invalidity
Article 63 - Application for revocation or for a declaration of invalidity
Article 64 - Examination of the application
Article 65 - Delegation of powers