A group of 22 Chinese authors are suing Apple over claims their work is being sold without a licence in the App Store.
In three separate lawsuits 12 authors are seeking a combined 23 million yuan (£2.3m) in compensation.
Papers filed in Beijing said 59 allegedly-pirated titles were published in the iPad maker’s online store.
An Apple spokeswoman said the company took intellectual property-related complaints seriously.
“As an IP holder ourselves, we understand the importance of protecting intellectual property,” said Carolyn Wu.
“When we receive complaints we respond promptly and appropriately.”
Wang Guohua, the lawyer representing the authors, told the Associated Press that the works were uploaded to Apple’s store without the rights holders’ permission.
Some titles were deleted by Apple when lawsuits were filed in January, Mr Wang added, but many titles were said to have quickly reappeared.
“Some developers, with whom Apple has contracts, put them back online again,” he said.
Read More/Source: BBC News