AI Co-Creation Authorship Rules CoAuthor Deep Dive: Who Owns Copyright When Humans and AI Collaborate

CoAuthor, jointly released by the World Intellectual Property Organization and the University of Geneva, is a new copyright rule system for human-AI collaborative creation. The system is the first to systematically define AI's role in creation, dividing AI contribution into five levels: tool, collaborator, co-author, dominant party, and independent creator, and determining copyright ownership and attribution methods in different scenarios accordingly.

CoAuthor grew out of the surge in AI creation copyright disputes worldwide. Since 2025, landmark cases have appeared in the European Union, the United States, and China, including whether paintings generated by humans with AI assistance can enjoy copyright and whether poetry created independently by AI enters the public domain. National court decisions have contradicted each other, creating tremendous uncertainty for creators and platforms. WIPO decided to lead the development of a globally applicable set of rules.

The core of the rules is a contribution evaluation matrix. CoAuthor designed a 5-by-5 evaluation matrix that assesses AI's involvement in creation from five dimensions: source of creativity, key decisions, degree of modification, quantitative contribution, and final judgment. Each dimension is scored from 0 (entirely human) to 5 (entirely AI). The composite score determines copyright ownership: a composite score of 10 or below is treated as a tool (human owns everything), 11 to 15 is collaborator (human-led, AI attributed in acknowledgments), 16 to 20 is co-author (shared copyright), 21 to 25 is dominant party (AI-led, human attributed in acknowledgments), and 25 or above is independent creator (AI owns everything, human has no rights).

For pilot cases, WIPO and the University of Geneva Faculty of Law conducted retrospective testing of CoAuthor rules against 200 real-world dispute cases worldwide. Results show that CoAuthor rules can resolve the copyright ownership questions for 178 cases, with the remaining 22 cases falling into rule gray areas requiring case-by-case judgment. WIPO Director General Daren Tang said the design goal of CoAuthor is not to eliminate disputes, but to provide clear rules for most common scenarios.

For applications, several international content platforms have begun adopting CoAuthor rules. Adobe has integrated the CoAuthor evaluation tool across its creative software suite, allowing authors to obtain AI contribution scores and copyright ownership recommendations with one click upon completion of a work. The International Authors Forum has also recommended CoAuthor rules to its 1.2 million members worldwide as the basic norm for creation in the AI era.

On the commercialization path, the rule text and evaluation tools for CoAuthor are publicly released by WIPO, free for individual creators and non-profit organizations. Commercial use (such as integration into commercial software) requires authorization from WIPO. Authorization fees are tiered based on company size: companies with fewer than 100 employees pay 5,000 dollars per year, those with 100 to 1,000 employees pay 25,000 dollars per year, and those with more than 1,000 employees pay 80,000 dollars per year. WIPO plans to use commercial authorization revenue to subsidize copyright infrastructure construction in developing countries.

Critics point out that CoAuthor rules lean toward Western creative industries and may not be applicable to non-Western cultural traditions. The CoAuthor team responded that the rules were designed in consultation with cultural scholars from Africa, Asia, and Latin America, and exclude non-digital creations such as traditional handcrafts and oral literature from the scope. At the same time, WIPO is working with national copyright agencies to localize CoAuthor rules and develop regional implementation details.