You don't need to register to own copyright — protection is automatic the moment you write the work, in the US and every Berne Convention country. But in the US you cannot sue for infringement of a US work until it's registered, and you can only claim statutory damages and attorney's fees if you registered before the infringement began or within three months of first publication. So: not required for ownership, strongly advisable for enforcement, and the timing is what matters.
Three separate things get conflated here.
1. Owning the copyright. Automatic on creation. No form, no fee, no © symbol required. This is true in every country signed up to the Berne Convention, which is nearly all of them.
2. Being able to enforce it in a US court. Registration is a prerequisite for filing an infringement suit over a US work. An unregistered work is owned but not, in practice, defensible in federal court until you register — and registering after the fact takes time you may not have.
3. Being able to recover meaningfully. This is where timing bites. Under 17 U.S.C. §412, statutory damages and attorney's fees are available only if registration happened before the infringement started, or within three months of first publication.
Without that, you're limited to actual damages plus the infringer's profits — which for most books is a small number, difficult to prove, and often less than the cost of the lawsuit. In practice this means an unregistered book usually isn't worth litigating over, which is the same as having no remedy.
Current US fees for online filing:
A change is pending. In March 2026 the Copyright Office proposed eliminating the Single Application and raising the Standard Application to $85 (paper filings to $185). The final proposed schedule went to Congress in July 2026, which has 120 days to respond. It is not in effect yet.
If you have backlist titles you've never registered, doing it under the current schedule is worth considering — the difference between $45 and $85 across eight titles is $320.
Most countries have no registration system at all, because Berne protection is automatic and enforceable without it. Some offer voluntary deposit or registration schemes with evidentiary value. If you're not a US author but sell into the US market, US registration may still be worth it, and the rules for foreign works differ — worth specific advice.
General information, not legal advice, and US-focused. Fees are under active revision — check copyright.gov before filing. Verified 9 August 2026.