In reference to the patent: WO2012120036A1

Is this patent valid worldwide and if not in which countries it is valid.

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The immediate document is an international application and it is not "valid", it is merely an application. This international application has spawned two "real" applications:

DE102011013224 - In Germany, abandoned on 2015/10/01

EP2683373 - In the EPO, still being actively examined:

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