The company said it filed the lawsuits in a Washington state court and in Germany.
Paid reviews remain a consistent problem for Amazon even though it banned the practice eight years ago.
The company says it uses machine learning technology and thousands of employees to crack down on the practice.
Itstruggles to remove themhowever because the activity is coordinated on external websites and social media groups.
The lawsuit follows similar actions Amazon has takenagainst AppSally, Rebatest, Matronex and Fivestar Marketing.
The company alsoremoved listings for electronics makersAukey and Mpow after a paid reviews schemecame to light.
