Apple's digital content resale and loan system could allow DRM transfers between end users

The U.S. Patent and Trademark Office on Thursday published details of an exhaustive Apple invention covering the resale and loan of owned digital content like e-books, music and movies, possibly portending an upcoming addition to iTunes.

The patent is outlined in three divisional applications, each titled "Managing access to digital content items," with two filed in September of 2011, and one in June of 2012. From the most recent filing, Apple describes a system that manages the authorized transfer of owned digital content between end-users. The invention is basically a system that allows purchasers to sell or loan "used" content to other people.

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