On January 17, 2015, the US Patent & Trademark Office published Apple's latest trademark filing for "iPhone" which was filed late yesterday. Although Apple's "iPhone" is already a Registered Trademark, they're now technically seeking to file "iPhone" under a new International Class for specific added protection.
Apple's iBooks was first announced alongside the iPad at a press conference in January 2010. Today the US Patent & Trademark Office published Apple's latest registered trademark for their iBooks icon that was revised for iOS 7. Apple originally filed for their trademark in the US on October 17, 2013.