> But, it is well known, that in the US, you can patent your Granny if you
> want to.

it is known someone in the US has patented his children, for good 
reason.

> Someone pateneted the XOR method of drawing stuff on a screen
> (non-destructively) a few years back, after it had been used for god knows
> how long. Whatever happened to 'Prior Knowlege' as a restriction ? It's all
> down to money in the end.

I think the XOR was only a hypothetical example. There is plenty of
real cases however.

> The Europeans don't allow that sort of thing - yet !
 
I am afraid you are an optimist.

Richard

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