An application for a certificate of no legal impediment to publication may be rejected if the title of the periodical so closely resembles the title of a periodical for which a certificate has already been issued that the two may easily be confused. A certificate of no legal impediment to publication is valid for ten years from the date of issue. The certificate lapses thereafter. The decision that a certificate shall be deemed to have lapsed after the expiry of the ten-year period is taken by the authority referred to in Article 4. The certificate may be renewed for ten years at a time, with effect from the expiry of the preceding ten-year period, on an application from the owner. An application for renewal may be made no sooner than one year before and no later than the expiry date. The same rules otherwise apply to an application for renewal of a certificate as applied in the case of the original application. If an application for renewal has been received in due time, the certificate shall continue to be valid, the provisions of paragraphs four and five notwithstanding, until the decision resulting from the application has acquired legal force. Art. 6. A certificate of no legal impediment to publication may be rescinded: 1. if the owner has given notice that publication of the periodical has ceased; 2. if the rights of ownership in the periodical have been transferred to a person who does not have the required qualifications; 3. if there is no responsible editor, or if the responsible editor does not have the required qualifications and a qualified responsible editor is not appointed forthwith; 4. if the periodical has not appeared within six months from the date on which the certificate of no legal impediment to publication was issued; 5. if at least four issues or instalments of the periodical specified in the certificate have not appeared at different times in either of the previous two calendar years; 6. if within six months from the appearance of the first issue it becomes apparent that a certificate should not 220

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