Another day, another lawsuit. Google’s Motorola Mobility unit has filed a new patent infringement case against Apple, claiming that features on some Apple devices, including the Siri voice-recognition program, infringe its patents, reports “Reuters” (http://macte.ch/4AR8v).

The complaint at the U.S. International Trade Commission claims infringement of seven Motorola Mobility patents on features including location reminders, e-mail notification and phone/video players, the article adds. The case seeks a ban on U.S. imports of devices including the iPhone, iPad and Mac computers. Appleā€™s products are made in Asia.

All this is part of an ongoing battle between the two companies. Apple has previously alleged that Motorola infringes 24 of its patents (21 of them with Android-based phones, the remaining three with set-top boxes and DVRs), while Motorola previously asserted 18 patents against a variety of Apple products (mostly but not exclusively iPhone, iPad and iPod). Litigation between the two companies has taken place in several different federal courts.

In November 2010 Apple sued Motorola, alleging that the company’s smartphone lineup and the operating software it uses infringe on the iPhone-maker’s intellectual property. The two lawsuits came after Motorola sued Apple in October 2010 for patent infringement. Motorola claims that Apple’s iPhone, iPad, iPod touch and certain Mac computers infringe Motorola patents.