Gabriel Aubrey's lawyer will almost certainly use the publication of topless Kate Middleton photographs in his case to keep his and Halle Berry's daughter in America.
The actress is hoping to move to France with Nahla, four, with her actor fiancé Olivier Martinez.
However her case could be harmed if her model ex uses the new press issue in his argument, according to website TMZ.com.
Halle's legal representative has been trying to convince the judge in her custody battle that their child is better off living in France with her mother because the paparazzi are more respectful of celebrities.
Gabriel was already using the paparazzi chasing Princess Diana to her death in 1997 as a reason she would not benefit from the relocation.