On Monday 28 January 2008 02:13, Michael Rogers wrote:
> Does MS have a patent on CHKs?
> 
...
> It's an interesting puzzle of intellectual history.  The idea  
> certainly seems to have been "in the air", as both Mojo Nation and  
> Freenet were working on it before the May 2000 patent submission by  
> Doceur et al., but Mojo Nation and Freenet each published the idea  
> shortly after May 2000.  According to my limited understanding of  
> patent law, this means that they don't count as prior art on that  
> patent.

This ought to be evidence of obviousness... but probably isn't. :|
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