Financial terms of the acquisition were not disclosed.
Vivarte, whose brands include Kookai, La Halle, Caroll, Minelli and Chevignon, has been owned since 2014 by a group led by investment funds Alcentra, Babson, Oaktree and GLG Partners.
The company, whose profits and sales have fallen amid competition from larger clothing retail chains such as H&M, Kiabi and Primark, has been trying to restructure its business for several years.
Pataugas had last reported annual sales of 14 million euros.
(Reporting by Sudip Kar-Gupta; Editing by Matthias Blamont)