Where the invention has been made available to the public in the six months prior to the application date or priority date, this disclosure does not form part of the state of the art when it is due to, or a consequence of:1
- an evident abuse in relation to the patent applicant or his legal predecessor; or
- the fact that the patent applicant or his legal predecessor has displayed the invention at an official or officially recognised international exhibition falling within the terms of the Convention on International Exhibitions of 22 November 19282, and he has declared the fact at the time of filing and has produced sufficient supporting evidence in due time.