NEW YORK (CNNMoney.com) -- Motorola Inc. announced Wednesday that it has filed three complaints against Apple over alleged patent infringements in its popular wireless and mobile devices.
The complaints were filed with the International Trade Commission as well as in the Northern District of Illinois and the Southern District of Florida.
The complaints allege that Apple's (AAPL, Fortune 500) popular iPhone, iPad, iPod Touch and some of its computers infringe on Motorola's (MOT, Fortune 500) patents in the areas of antenna design and other smartphone technologies. According to Motorola, Apple has infringed on 18 patents.
"After Apple's late entry into the telecommunications market, we engaged in lengthy negotiations, but Apple has refused to take a license," said Kirk Dailey, corporate vice president of intellectual property at Motorola Mobility. "We had no choice but to file these complaints to halt Apple's continued infringement. Motorola will continue to take all necessary steps to protect its R&D and intellectual property, which are critical to the company's business."
Representatives from Apple were not immediately available for comment.
According to Motorola, the company has asked the trade commission to issue an order that would bar Apple from importing, selling, marketing or warehousing the products in question.
The suit is the latest in a flurry of mobile patent disputes. On Friday, Microsoft (MSFT, Fortune 500) filed a lawsuit against Motorola, saying the smartphone maker had infringed on nine patents in its Android-based devices.
That suit alleges that Motorola violated patents on essential smartphone functions, including "synchronizing e-mail, calendars and contacts; scheduling meetings; and notifying applications of changes in signal strength and battery power," Microsoft said.
Apple filed a lawsuit in March against HTC, the Taiwanese maker of smartphones, for allegedly infringing on 20 Apple patents related to the iPhone's user interface, underlying architecture and hardware.
And in August, Oracle (ORCL, Fortune 500) sued Google (GOOG, Fortune 500) over what it says are software patent violations in Google's Android mobile operating system. 
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