On January 3, 2013, the US Patent & Trademark Office published patent applications from Apple relating to their push notifications system and new MagSafe 2 connector. The new MagSafe 2 connector was announced at Apple's June 2012 World Wide Developer Conference in conjunction with the debut of the MacBook Pro 15-inch Retina Display. The new connector was designed to better fit the slimmer notebook designs. In late 2012, Samsung sued Apple over their push notifications system in Korea. It'll be interesting to see if Apple's notification system patent will get approved by the US Patent Office in time for this case – as Apple's system applies to both iOS and Mac hardware which could differentiate their system enough to strengthen their position.