The Anthropic Settlement Turned on One Registration Date

A federal court has approved a $1.5 billion settlement over books that Anthropic downloaded from pirate libraries and used to train its AI models. Whether a given book made it into that class had nothing to do with how well it sold or who published it. It came down to whether a copyright registration certificate existed before a particular date, and books that missed that date were never class members at all. If you have titles in print and have never filed a registration, you are on the wrong side of a line you probably did not know was being drawn.

What happened in Bartz v. Anthropic

On July 20, 2026, Judge Araceli Martínez-Olguín of the U.S. District Court for the Northern District of California granted final approval to the settlement in Bartz v. Anthropic, a class action brought by authors Andrea Bartz, Charles Graeber, and Kirk Wallace Johnson. Quoting its own earlier opinion in the case, the court described the approximately $3,000 per-work award as four times the $750 statutory minimum for ordinary infringement.

No money has moved. The settlement administrator makes payment conditional on the resolution of any appeals, and no distribution date has been published. The claims window closed on March 30, 2026, so nobody reading this can still file either.

What is worth having is the class definition. It decided who qualified, and it decided that years before anyone filed a lawsuit.

The fine print that decided who qualified

Three things had to be true. The book needed an ISBN or ASIN. It needed a U.S. Copyright Office registration made within five years of publication, which is what makes the copyright presumed valid rather than something the author has to prove. And that registration had to predate Anthropic's download of the book, or fall within three months of the book's publication.

Anthropic did its downloading in 2021 and 2022, no later than August 10, 2022. That date is doing different work from the August 25, 2025 cutoff you may see quoted elsewhere in the settlement: the 2022 date determines which books could have been taken at all, while the 2025 date sets the boundary on which of Anthropic's own acts the deal releases. For a book already in print by the summer of 2022, the test was blunt. Had the author registered, or not?

Nothing in those criteria concerns sales. Nothing concerns who published the book or how. A self-published novel that sold a few dozen copies, registered on time, qualified on exactly the same terms as a bestseller from a Big Five house.

Your copyright exists the moment the words are on the page. That protection is automatic, costs nothing, and is entirely real. It is also not the part that did the work here. The certificate is. We covered what infringement is and how copyright law protects you in our guide to copyright infringement for self-publishers.

Where the three-month test comes from

That "before the infringement, or within three months of publication" test was not invented for this case. It tracks Section 412 of the Copyright Act, which governs when you can ask a court for statutory damages and attorney's fees. The Copyright Office puts it plainly in Circular 1: "When registration is made prior to infringement or within three months after publication of a work, a copyright owner is eligible for statutory damages, attorneys' fees, and costs." Register outside that window and you can still sue. You just have to prove what the infringement cost you and what the infringer made from it, rather than have the statute set the number for you.

Nothing in the approval order explains the class line that way. A book that clears both criteria is one whose validity is presumed and whose damages are set by statute, which is a claim you can price without running an individual trial. That looks like the shape of a class you could settle at this size. Whether the next AI case draws its line the same way, nobody can say yet.

What this means for the book you are publishing now

The Copyright Office's Single Application, which covers one work by a single author who owns the whole thing, costs $45. The Standard Application costs $65 and is what you need for everything else, including co-authored books, anthologies, and any book where the cover art is separately owned. On July 14, 2026, the Office sent Congress a proposed fee schedule raising those to $55 and $85 in fall 2026 unless Congress blocks it.

Statutory damages and attorney's fees cover infringement that begins after your registration takes effect, so filing at any point protects you from that day forward. The three-month window is a grace period stacked on top of that: register inside it and those same remedies reach back across anything that started in your first three months on sale. File later and whatever was already running when you filed sits outside the remedy permanently.

You file at copyright.gov through the Electronic Copyright Office system, and that three-month window is the one piece of this you fully control, because you cannot know in advance when an infringement will start. If you would rather hand it off, ISBNdirect files copyright registrations for anyone with an account.

If you think your books were caught up in this

Books published before August 10, 2022 are the ones that could have been in the corpora Anthropic downloaded. If yours are among them, the Authors Guild's settlement FAQ is the clearest plain-language walkthrough of the criteria. It will not get you into the settlement, since claims closed in March. It will tell you whether you were eligible, and what eligibility would have required.

For a book you are publishing now, the move is small. Register within three months of release, keep the certificate with your book records, and put it on the launch checklist next to the cover file and the metadata.

For the wider picture, our guide to copyright infringement covers the fundamentals, and our post on registering copyright for AI-assisted work covers what changes when AI has touched the manuscript.

The authors in this class registered on schedule. You cannot know which of your books will matter later, or to whom, or on whose terms. The three months after you publish is the part you control.