For the application of Article L. 611-11, a disclosure of the invention shall not be taken into consideration in the following two cases:
-if it takes place within the six months preceding the filing date of the patent application;
-if it results from the publication, after the filing date, of an earlier patent application and if, in either case, it results directly or indirectly :
a) From an obvious abuse against the inventor or his predecessor in title;
b) From the fact that the invention has been presented by them at an official or officially recognised exhibition within the meaning of the revised convention concerning international exhibitions signed at Paris on 22 November 1928.
However, in the latter case, the exhibition of the invention must have been declared at the time of filing and a justification produced within the time limits and under the conditions laid down by regulation.