The Apple Watch officially launched on April 24, 2015 in three variants including Apple Watch, Apple Watch Edition and Apple Watch Sport. Earlier this month Apple introduced watchOS 2 along with new colorful band choices as noted above including PRODUCT(RED)™. Today the U.S. Patent and Trademark Office published Apple's Registered Trademark (RTM) certificate that was awarded yesterday for the stylized Apple Watch Sport logo (or technically a 'Design Mark') as noted in our cover graphic.
Apple's RTM Certificate for the Design Mark Representing the 'Apple Watch Sport'
Apple filed their trademark under international class 14 which covers the following specifically: "Horological and chronometric instruments; watches; timepieces; chronographs for use as timepieces; chronometers; watchstraps; watch bands; cases for watches, and horological and chronometric instruments; parts for watches, and horological and chronometric instruments."