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> When is that the case? When is it not?

Can you name some specific thing where you think this would be unclear?

> Are medical devices that run software excluded? Are all kinds (read most) imaginable consumer electronics also excluded (they also have some software)?

Do they consist of only computer software and a prior art computer?

It doesn't say the device has to contain no software. If you come up with some new light sensor for a camera which is only useful in combination with a particular algorithm to interpret the output then you would be able to patent the sensor (hardware) but not the algorithm (software). If it's just a new algorithm to interpret data from existing sensors then it's a software patent.

I don't see what part of this you find so perplexing. It is a software patent if running software is all that is required to infringe it.



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