Complex sentence: Their appeal against that decision was rejected by the Bundesverfassungsgericht (Federal Constitutional Court of Germany) in 2010, but a second appeal to the Oberlandesgericht succeeded in 2012.
Split into simpler sentences: Their appeal against that decision was rejected by the Bundesverfassungsgericht (Federal Constitutional Court of Germany) in 2010. A second appeal to the Oberlandesgericht succeeded in 2012.