ryan_fung writes "A Hong Kong based company, Pat-rights, is claiming that Apple's iTunes Music Store is infringing their patent on 'Internet User Identity Verification' and is demanding Apple pay 'a reasonable license fee, 12% of gross sales of iTunes music tracks and iPods.'" (They also claim infringement by eBay, porn sites, and others.) Reader bblazer links to a Register article which mentions both the Pat-Rights claim and another suit entirely. From the article: "Apple has found itself facing a pair of intellectual property challenges that separately claim its FairPlay DRM system and its iPod music player contain technologies to which the Mac maker does not have a right. First up, Lake Forest, Illinois-based Advanced Audio Devices (AAD) alleges its patent, number 6,587,403, for a 'music jukebox,' filed in August 2000 but granted in July 2003, covers the kind of thing Apple has brought to market as the iPod."