A mobile application's icon is the first thing one typically notices about an app when an app is downloaded or a phone opened. The distinctive little square, full of color and shapes, is extremely important to a company's branding. Therefore, it's no surprise to see many companies filing federal trademark applications to protect the look of these icons.
For example, on May 5th BuzzFeed, Inc. filed a federal trademark application for the leaping dog silhouette seen below.
This is not the first trademark application for a mobile application icon that's been featured on this blog. Back in August 2015, days before the special event where Apple announced the iPhone 6S and iPhone 6S Plus, Apple filed a federal trademark application for its "Activity" app icon.
Given the popularity and importance of mobile apps, expect to see more and more companies file trademark applications for their icons in the future.