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This week, the U.S. Supreme Court heard arguments in a case called Kirtsaeng v. Wiley, which will test the limits of something called the “first sale” doctrine. First sale is the legal doctrine that governs our right to buy, sell, and loan things like CDs, books, DVDs, and any other product that is covered by copyright without first having to obtain permission from the product’s copyright holder. If the Supreme Court sides with textbook publisher John Wiley and Sons, which sued Thai-born student Supap Kirtsaeng on copyright infringement grounds for buying the publishers books in Thailand and selling them to U.S. college students at a profit, you may no longer be able to freely buy or resell used, copyrighted goods. It could even put a stake through the heart of...