Important update for everyone following this thread. The Copyright Office published its final report on AI and copyright in late 2022, and there are some significant clarifications worth noting.
The big headline: they've doubled down on the "human authorship" requirement but provided much more granular guidance on what qualifies. Specifically, the report distinguishes between three tiers:
1. Purely AI-generated: No copyright. Period. This includes output from a simple prompt with no meaningful human creative input.
2. AI-assisted with substantial human direction: Potentially copyrightable. The human must demonstrate "creative control over the expressive elements" - meaning you directed the structure, made substantive editorial choices, and the final work reflects your creative vision rather than the AI's default output.
3. Human-authored with AI tools: Fully copyrightable. This is where AI functions like spell-check or grammar assistance - the human is clearly the author.
For most content agencies, you're in category 2, which means your copyright claim depends on how well you can document your creative contributions. The "substantial human authorship" standard from earlier guidance is now more formally defined.