Disclosure: The team at Jacques Fath and perfumer Patrice Revillard, who did the reconstruction of Iris Gris, are now friends as a result of what I describe below.
I got some good news a couple of days ago. The trademark Iris Gris, long owned by a person in the US, has now reverted to Jacques Fath and, once the bottles labeled LโIris de Fath run out, the next batch will proudly say Iris Gris once again.