According to Andrew Ng, the United States District Court has ruled that training large language models (LLMs) on copyrighted books constitutes fair use, following a lawsuit by several authors against Anthropic for using their works without permission (source: Andrew Ng on Twitter, June 26, 2025). This legal precedent significantly reduces legal barriers for AI companies, potentially accelerating the development and deployment of generative AI models. The decision clarifies that AI model training is comparable to how individuals learn from reading books, providing a clear regulatory green light for leveraging vast text corpora in machine learning. This outcome is expected to increase investment and innovation in the generative AI sector, particularly in enterprise solutions, content generation, and knowledge management applications.