The interest that the Festina trial brought to him led to an invitation to write a column during the 1999 Tour de France for Le Parisien, a newspaper in the same corporate group as the Tour de France itself.
Le Parisien quoted Antoine as saying "...he was called upon in 1985 to go to New Zealand, to Auckland Harbour, to sabotage the Rainbow Warrior. Later, he told me that it was him who planted the bomb on the Greenpeace ship".
In 1974 he founded his law practice, where he handled some famous legal matters such as the inheritance issues of Émilien Amaury, the founder of the media group Amaury-Le Parisien.
Pierre Vavasseur of Le Parisien gave the film the top rating of three stars and compared the impression it left to that of Persepolis by Marjane Satrapi.
In 2011, Charles de Saint Sauveur reveals in Le Parisien a problem for Who’s Who in France about the exact year of birth of the actress Arielle Dombasle.