In the documents, the Umbrella star claims her father and a business partner also falsely advertised themselves as her representatives
The singer’s team claim they have sent numerous cease and desist letters to Ronald ordering him to stop using the trademarked name.
TMZ reports Rihanna’s lawyers are now asking a judge in the US to grant an injunction banning Ronald from using Fenty and grant her damages.
The star was born Robyn Rihanna Fenty and has used her surname on several business projects, most notably her Fenty Beauty line which was launched in 2017.
She also own a lingerie brand called Savage X Fenty.
Rihanna has had a turbulent relationship with her dad in the past and he\’s been open about his past battles with drink and drugs.
However, they have got close again in recent years.
The Umbrella star was last pictured with Ronald back in November during a trip home to her native Barbados.