According to Microsoft, Google's Android OS is infringing on many of its patents and hence those manufacturers who use Android for their devices owe royalties to Microsoft.

Tuxera, the Finnish company behind the NTFS-3G open source driver, on its own initiative entered into an agreement with Microsoft over exFAT drivers.

Tuxera, the NTFS-3G File System Provider, Signs Intellectual Property Agreement with Microsoft, Announces Tuxera exFAT for Embedded Systems"

Tuxera offers Android and Linux driver for next-generation memory flash cards that relies on Microsoft's exFAT.

B&N claims that all of these [exposed patents] are "trivial" and "insignificant" in terms of Android's use. They claim Microsoft is using these patents for minor functionality to hold Android hostage. It is not just licensing fee's either, ...

A defender of (sometimes lobbyist for) software patents gets itself in trouble after Microsoft settles; company that sues

Yesterday as well as the day before that, some of the press reopened a jar of worms and spoke about Microsoft’s software patents minefield, but bloggers did not pay any attention to Novell’s fight against the free in “Free software”. Novell is just about as guilty as Microsoft because without its participation and pasive endorsement Microsoft’s efforts would hold no water.

How Microsoft uses ActiveSync to shut out Free software with software patents; OOXML patents and other issues revisited; Bilski to be revisited by the Supremes, who can axe software patents in the United States

Samsung's phones that serve Microsoft's software patents agenda have also contact with Android now