In another patent campaign, Microsoft's lawyers have been busy filing legal briefs against mobile hardware vendor Motorola. Microsoft filed suit against Motorola in November over an alleged breach-of-contract related to the licensing terms of the disputed patents.Microsoft and Motorola are also engaged in a legal spat over alleged patent infringement with Motorola's use of Android. Microsoft alleges that Motorola's use of Android technology infringes on nine of its patents.

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