There have been two significant references on issues that have been "left hanging" by the Court of Justice of the European Union (CJEU) in the last spate of decisions, says Paul England, senior associate at Taylor Wessing, in a video interview with LSIPR. England discusses the two important references to the CJEU with regard to supplementary protection certificates. Here he covers the Teva v Gilead Sciences and Abraxis Bioscience references, and talks about the importance of these cases.