The Supreme Court in the United States has refused to consider an appeal by Danish biotech firm Novozymes in a patent case involving the US chemical company DuPont.
In 2010, Novozymes sued a DuPoint unit in Wisconsin federal court for allegedly infringing an enzyme patent. The judge found that the patent had been infringed, but questions were raised over the validity of the patent itself.
A jury found in 2011 that the patent was valid, and that the DuPont unit, called Danisco, owed Novozymes $18.2 million for infringing it.
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