The directions to a person skilled in the art to consider during the voice response of a navigation message under certain conditions certain detailed information (in this case, street names) concerns the content of the information rendered by the navigation system either the optically or acoustically and is not to be considered during the examination of the technical teaching of the patent with respect of the inventive step.
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Decision of the Federal Supreme Court (Bundesgerichtshof) 23 April 2013 – Case No. X ZR 27/12. “Vehicle Navigation System” (Fahrzeugnavigationssystem). IIC 44, 974 (2013). https://doi.org/10.1007/s40319-013-0136-0