In April Sony admitted to data breaches affecting close to 100 million of its customers: 75 million PlayStation customers and 24.6 million Sony Entertainment customers.
A total of 55 separate class action lawsuits have been filed against Sony related to those data breaches, according to court documents filed by Zurich and cited by Reuters.
Zurich American has received claims for coverage from Sony under its policy, a commercial general liability policy written for Sony Computer Entertainment of America.
The insurer argued that it does not have an obligation to defend any other Sony unit under that primary policy, since it only applies to the specific business in question, according to Reuters.
In addition, Zurich American said its policy only covers the Sony unit for "bodily injury, property damage or personal and advertising injury." It said no such claims have been made in any of the class-action lawsuits, Reuters reported.
Zurich American, a unit of Zurich Financial Services, also sued units of Mitsui Sumitomo Insurance, AIG, and ACE, asking the court to clarify their responsibilities under various insurance policies they had written for Sony, according to Reuters.
Sony said it expect to pay 14 billion yen ($178 million) in the current financial year related to the data breaches.