"We have a responsibility to our customers, partners, and shareholders to safeguard the billions of dollars we invest each year in bringing innovative software products and services to market, he added. "Motorola needs to stop its infringement of our patented inventions in its Android smartphones."
The patents relate to the smartphone's ability to send and receive email on-the-go, which is part of Microsoft?s Exchange ActiveSync technology.
While Google licenses Microsoft's ActiveSync for use in Android, Microsoft may plan to argue that handset makers that add their own technologies to Android also need a license for ActiveSync. Motorola, of the major Android supporters seems to be the the only one that doesn't license ActiveSync themselves, while HTC, Samsung, Sony Ericsson, Dell and others all license Microsoft's technology.
Other patents involve technology that displays signal strength and battery power on phones.
In a statement, Motorola said it had not received a copy of the complaint. "Motorola has a leading intellectual property portfolio, one of the strongest in the industry. The company will vigorously defend itself in this matter," it said.
Microsoft plans to release its new Windows Phone 7 software later this year, in an effort to resurrect itself in the viciously competitive phone market. The new software, which will be publicly unveiled on October 11 and expected on handsets in stores by November, is Microsoft's last chance, to catch up with Apple and Google's Android smartphones.
Samsung and HTC are expected to roll out Microsoft-based phones for the holiday season.