The Public Domain, Explained: What You May Legally Read, Copy, and Sell

Copyright is a temporary monopoly. When it expires, the work enters the public domain — owned by no one, usable by everyone, for any purpose including commercial sale. That single fact powers a large part of the legitimate e-book economy, and misunderstanding it powers most of the illegitimate one.

How works get there

The common routes are expiry (in most countries, life of the author plus 70 years; in the United States, publications before 1929 are public domain as of 2026), dedication (the author explicitly waives rights, e.g. CC0), and ineligibility (works of the U.S. federal government, mere facts and ideas).

The traps

Translations are separately copyrighted: Tolstoy is public domain, but a 1998 English translation of Tolstoy is not. New editions can add protected material — introductions, annotations, cover art — even when the underlying text is free. And availability is not status: a book being downloadable somewhere says nothing about its legality. 'I found it online' has never been a license.

How a careful seller verifies

Check the author's death year against the term rule of each market you sell into. Check the specific edition — text, translation, artwork — not just the title. Keep a provenance note per title: source, basis for public-domain status, date checked. That note is the difference between a catalog and a liability.

Public domain is not a loophole. It is the deal society made with authors: protection for a time, then a permanent gift to everyone. Selling well-made editions of that gift — carefully verified, honestly described — is not merely legal. It is the system working as designed.