In response to his older brother, Luca Dotti, who serves as the chairman of the Audrey Hepburn Children's Fund, filed a lawsuit against Sean Ferrer that stated he was intruding on the charity's fundraising efforts, which may cause it to dissolve if it can't meet its obligations, as reported by Variety. Although the half-brothers had equal rights to their mother's estate, the will did not specify which brother received specific items.

In 2017, as reported by The Daily Mail, Ferrer and Dotti agreed to sign an agreement that detailed their mother's belongings and which ones would go to each brother, which ended their feud. In regard to the lawsuit filed by the charity against Ferrer, a judge sided with Hepburn's son, stating that since intellectual properties were owned equally by the two brothers, both Ferrer and Dotti must consent before they can be used (via NBC Los Angeles).