The principle allows an individual who purchases a legally obtained copyrighted item to resell, lend, or give away that specific item without infringing the copyright holder’s rights. For instance, if someone buys a book, they can resell that particular book without needing permission from the copyright owner, such as the author or publisher.
This concept is fundamental to the functioning of various markets, including used bookstores, libraries, and online marketplaces. It balances the rights of copyright holders to control the initial distribution of their works with the public interest in allowing for the free flow of goods. Historically, this legal framework has fostered competition and provided consumers with access to affordable goods.