As AI tools became a routine part of research and development workflows, patent offices faced an increasingly practical question: when an AI system contributes meaningfully to an invention, who, if anyone, is the inventor. On February 13, 2024, the USPTO answered with its first formal guidance on AI-assisted inventorship.
The Core Rule: Natural Persons Only
The guidance confirms that an AI system cannot be named as an inventor or joint inventor on a US patent application; every named inventor must be a natural person. That does not mean an invention created with substantial AI assistance is unpatentable. It means the analysis shifts to identifying which natural person, or persons, contributed enough to the invention to qualify as an inventor under existing law.
Borrowing the Pannu Factors
To make that determination, the USPTO applied the existing Pannu factors, developed for joint-inventorship disputes among human collaborators, to the AI context: a proper inventor must contribute in some significant manner to the conception of the invention, contribute in a way that is not insignificant when measured against the full invention, and do more than merely explain well-known concepts or the current state of the art to the actual inventors. A person who simply poses a problem to an AI system and presents whatever output it generates, without more, is unlikely to satisfy this standard.
What Counts as a Significant Human Contribution
The guidance walks through several illustrative scenarios: constructing a detailed prompt that itself embodies inventive insight can qualify as a significant contribution, while simply recognizing and appreciating an AI's output, without contributing to the underlying invention, generally does not. Reducing an AI-generated concept to practice, or developing a new AI system in a way that is itself significant to a resulting invention, can also support inventorship, depending on the specific facts.
Why This Guidance Mattered Immediately
For any organization using AI tools in product development or research, correct inventorship is not a formality; naming the wrong inventors, or omitting a person who made a significant contribution, can jeopardize the validity of the resulting patent entirely. Companies integrating AI into their R&D process needed a documented practice for capturing who did what, and why, at the point of conception, not reconstructed after the fact when an application is being prepared.
We advise clients on documenting inventorship in AI-assisted development programs, and on how that documentation should inform inventor designation on both US and Canadian filings.