Sometimes, something is so strange that you just have to think for a minute to wrap your head around it.  First, Immersion develops force-feedback controllers. Sony and Microsoft use the technology in their systems.  Immersion sues both.  Microsoft settles for $26m, but Sony fights and loses for $90m.  With me so far?  Seems easy, right?  So why is 
Microsoft now suing Immersion?
Because Immersion won against Sony.
In a soap-opera like twist, apparently Microsoft made an interesting deal with Immersion when it settled.  When MS forked over the $26m, it entered into a contract - if Immersion then won its suit against Sony, MS would recoup $15m of that $26m.  Apparently, Immersion isn't thinking it's such a great deal now, but it was quite eager at the time.  
And it doesn't even stop there - Microsoft is now accusing Immersion of lying about the amount of the settlement with Sony (which was done behind closed doors), choosing a ticket price below $100m.  Why, one might ask?  Because apparently Microsoft was due an extra "kicker" if the victory over Sony crossed the $100m threshold.
Nobody is really sure exactly 
why a deal like this would take place, but there are certainly some ideas that I've come up with.  You'll see them soon enough - but for now, why don't you tell us some of your own theories 
in our forums.
    
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