FRANKFURT - Efforts by an unnamed aluminium producer and an unnamed cement producer to overturn Germany's CO2 emissions certificate law have failed, Germany's constitutional court said in a press release.
The aluminium producer's case related to the allocation of emissions certificates in 2007.
However, the court declined to rule on the case because the producer failed to initiate the case within one year after the law came into effect.
This year's emissions certificates were allocated according to legislation that took effect on August 31, 2004.
The cement producer had argued that the CO2 emissions certificate law violated certain aspects of Germany's constitution.
However, the court ruled that this was not the case.