I bet they aren't planning to sue the new boss of Nokia though !
Secondly, by all accounts Elop took the position with the full blessing of Microsoft (conspiracy theorists will bring up the "trojan horse" as a reason, but it doesn't have to be that fantastical).
Thirdly, you could make a very good argument that Nokia is not a direct competitor to Microsoft. Microsoft doesn't make phones, they license a smartphone operating system. Nokia makes smartphones, which use two operating systems (one of which they don't own, the other of which they didn't own until very recently). I suppose they own Series 40, but that's not a smartphone operating system.
If you were just trying to be funny, then my apologies.
finally, i think it is not possible to make a very good argument that nokia was not a direct competitor of microsoft.
peace
In what market are Microsoft and Nokia direct competitors?
They had a partnership with Nokia for Symbian (Microsoft was developing Silverlight and allegedly a version of Office, although I don't know if either really existed).
Nokia's competitors are hardware phone manufacturers, which Microsoft isn't.
You might argue that they are "indirect competitors" because Microsoft makes a smartphone operating system, and Nokia uses smartphone operating systems made by someone besides Microsoft. This ignores the fact that Microsoft's customers are phone makers, and Nokia's customers are consumers.
Nokia makes business phones