Apple has accused a Korean music player maker of illegally copying the design of the iPod mini. Iops, the fifth-largest MP3 player seller in South Korea, received a complaint from Apple in October which demanded the company stop selling two of its models—Iops Jock and Iops Z3—because they rip-off Apple’s designs.

In the letter sent to Iops, Apple also asked that the company compensate the iPod maker for lost sales, and demanded an official apology to be printed in more than two of the daily newspapers in South Korea. “Iops rebuffed the claim, saying it is waiting for further action from Apple,” The Korea Times reports. “The Korean firm said that it is expecting an international legal suit from Apple.”