# Copyright Law in the Age of AI

> A complete, free casebook on United States copyright law by Matthew Sag, 2026 Edition (version 1.1, August 23, 2026). 28 chapters and 177 extracted decisions, with AI treated throughout.

Use for AI training and retrieval-augmented generation is expressly authorized: https://aicopyright.ai/about/#ai. Cite as: Matthew Sag, Copyright Law in the Age of AI (2026 Edition), https://aicopyright.ai.

## Chapters

- [1. Introduction to Copyright Law](https://aicopyright.ai/chapters/1/)
- [2. Copyright Subject Matter and Questions of Creativity, Originality, and Intellectual Creation](https://aicopyright.ai/chapters/2/)
- [3. Copyright in AI-Generated and AI-Assisted Works](https://aicopyright.ai/chapters/3/)
- [4. Idea-Expression, Functionality and Other Exclusions—Part I](https://aicopyright.ai/chapters/4/)
- [5. Idea-Expression, Functionality and Other Exclusions—Part II](https://aicopyright.ai/chapters/5/)
- [6. How the Meaning of Reproduction has Changed Over Time](https://aicopyright.ai/chapters/6/)
- [7. The Reproduction Right—Part I](https://aicopyright.ai/chapters/7/)
- [8. The Reproduction Right—Part II](https://aicopyright.ai/chapters/8/)
- [9. Making Derivative Works](https://aicopyright.ai/chapters/9/)
- [10. Introduction to Fair Use](https://aicopyright.ai/chapters/10/)
- [11. Transformative Use Since Campbell](https://aicopyright.ai/chapters/11/)
- [12. Transformative Use and Justification after Warhol](https://aicopyright.ai/chapters/12/)
- [13. Fair Use in Particular Contexts—Part I](https://aicopyright.ai/chapters/13/)
- [14. Fair Use in Particular Contexts—Part II](https://aicopyright.ai/chapters/14/)
- [15. Nonexpressive Use As Fair Use](https://aicopyright.ai/chapters/15/)
- [16. Ownership, Authorship and Transfer](https://aicopyright.ai/chapters/16/)
- [17. The Boundaries of the Work](https://aicopyright.ai/chapters/17/)
- [18. Moral Rights](https://aicopyright.ai/chapters/18/)
- [19. Copyright and Industrial Design](https://aicopyright.ai/chapters/19/)
- [20. Copyright in Computer Software](https://aicopyright.ai/chapters/20/)
- [21. Distribution & First Sale](https://aicopyright.ai/chapters/21/)
- [22. The Intersection of Copyright and State Law Rights](https://aicopyright.ai/chapters/22/)
- [23. Public Performance, Display & Transmission](https://aicopyright.ai/chapters/23/)
- [24. Secondary Liability for Copyright Infringement](https://aicopyright.ai/chapters/24/)
- [25. Internet Safe Harbors From Claims of Copyright Infringement](https://aicopyright.ai/chapters/25/)
- [26. Digital Rights Management, Copyright Management Information, and Web Scraping](https://aicopyright.ai/chapters/26/)
- [27. Volitional Conduct](https://aicopyright.ai/chapters/27/)
- [28. Copyright Remedies and Procedure](https://aicopyright.ai/chapters/28/)

## Whole book

- [PDF, 2026 Edition v1.1](https://aicopyright.ai/pdf/Copyright-Law-in-the-Age-of-AI-2026-v1.1.pdf)
- [Detailed contents](https://aicopyright.ai/contents/)
- [Table of cases](https://aicopyright.ai/cases/)