Penguin Random House Sues OpenAI Over ChatGPT's Copyright Infringement of Popular Children's Book Series

Penguin Random House has taken legal action against OpenAI, claiming that its ChatGPT chatbot infringed on the copyright of a popular German children's book series, Coconut the Little Dragon, by generating text and images virtually indistinguishable from the original work.

The lawsuit, filed with a Munich court against OpenAI's Ireland-based European subsidiary, asserts that ChatGPT's responses to prompts were 'clear evidence' that the large-language model had unlawfully 'memorised' the work of Ingo Siegner, the author and illustrator of the Coconut series.

Penguin Random House argues that ChatGPT's ability to generate a story, cover, and blurb for a children's book featuring Coconut the Dragon on Mars demonstrates that OpenAI's technology has unlawfully stored and reproduced Siegner's work.

This lawsuit could set a precedent for other publishers in the industry, as it challenges the use of AI models that can mimic and reproduce copyrighted material. Carina Mathern, a Penguin Random House publisher, emphasized that the company is committed to protecting intellectual property while remaining open to the opportunities offered by AI.

In response, an OpenAI spokesperson stated that the company is reviewing the allegations and respects creators and content owners, while also engaging in productive conversations with many publishers worldwide.

This legal action follows a previous ruling by a Munich court in November 2025, which found that ChatGPT had violated German copyright laws by using hits from top-selling musicians to train its language models.