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The Internet Archive (IA) went before a three-judge panel Friday to defend its open library's controlled digital lending (CDL) practices after book publishers last year won a lawsuit claiming that the archive's lending violated copyright law.

In the weeks ahead of IA's efforts to appeal that ruling, IA was forced to remove 500,000 books from its collection, shocking users. In an open letter to publishers, more than 30,000 readers, researchers, and authors begged for access to the books to be restored in the open library, claiming the takedowns dealt "a serious blow to lower-income families, people with disabilities, rural communities, and LGBTQ+ people, among many others," who may not have access to a local library or feel "safe accessing the information they need in public."

During a press briefing following arguments in court Friday, IA founder Brewster Kahle said that "those voices weren't being heard." Judges appeared primarily focused on understanding how IA's digital lending potentially hurts publishers' profits in the ebook licensing market, rather than on how publishers' costly ebook licensing potentially harms readers.

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As a result of book publishers successfully suing the Internet Archive (IA) last year, the free online library that strives to keep growing online access to books recently shrank by about 500,000 titles.

IA reported in a blog post this month that publishers abruptly forcing these takedowns triggered a "devastating loss" for readers who depend on IA to access books that are otherwise impossible or difficult to access.

To restore access, IA is now appealing, hoping to reverse the prior court's decision by convincing the US Court of Appeals in the Second Circuit that IA's controlled digital lending of its physical books should be considered fair use under copyright law. An April court filing shows that IA intends to argue that the publishers have no evidence that the e-book market has been harmed by the open library's lending, and copyright law is better served by allowing IA's lending than by preventing it.