Microsoft has filed a patent application for the "Put People First" phrase with the US Patent and Trademark office on September 19. The descriptions from the USPTO trademark filing reads:
"Wireless communications devices, namely, mobile phones, cellular telephones, personal digital assistants, and hand-held computers; computer software for use with wireless communication devices / Telecommunications services, namely, offering personal communications services via wireless networks"
"By filing a U.S. trademark on the new slogan, Microsoft aims to demonstrate its commitment to making the next version of the Windows Phone operating system people-centric (rather than application centric), with a big focus on social networking and direct communication," said TechCrunch.
Microsoft has already used the "Put People First" Phrase in some of its promotional materials for Windows Phone 7.5 such as the YouTube video shown below.
In a recent statement, Andy Lees, President of the Windows Phone division, states:
"Phones were originally designed for communication, but they haven't kept up with the way consumers are actually communicating today."
"That's why we built Windows Phone to put people first, building in all the key types of communication people are already using right out of the box."