In reference to the patent: WO2012120036A1
Is this patent valid worldwide and if not in which countries it is valid.
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: https://register.epo.org/application?number=EP12708816&lng=en&tab=doclist