On December 20, 2017, the Court of Justice of the European Union (CJEU) issued a judgement in case C-492/16 (Incyte Corporation) stating that its decision in case C-471/14 (Seattle Genetics) from October 2015 had retroactive effect, meaning that holders of supplementary protection certificates (SPCs) granted before October 2015 may, according to Article 18 of SPC Regulation No. 469/2009, ask for the recalculation of their SPC duration, provided that the SPC has not expired.