Patent case: Tongeber (Sound Generator), Germany

Kluwer Patent Blog
September 20, 2018

Please refer to this post as: , ‘Patent case: Tongeber (Sound Generator), Germany’, Kluwer Patent Blog, September 20 2018,

The FCJ confirmed that, when formulating the problem as a starting point for assessing inventive step, it is not permissible to narrow the problem by referring to prior art not cited in the patent.

The patent relates to a sound generator, in particular for parking assistance systems for vehicles. The sound generator is equipped with a housing comprising a base part and a top part. The base part has a receiving space, which can be covered by the top part, for receiving a diaphragm.

Case date: 17 April 2018
Case number: X ZR 56/16
Court: Federal Court of Justice of Germany

A full summary of this case has been published on Kluwer IP Law.