In a decision published yesterday, Justice Crampton of the Federal Court denied Astrazeneca’s request for an interlocutory injunction against Apotex. The decision is Astrazeneca Canada Inc. v. Apotex Inc., 2011 FC 505 (Esomeprazole) in T-1668-10 and follows a PM(NOC) proceeding in which Apotex’s allegations of invalidity against at least some of the patents were found justified (T-371-08). The decision has already been appealed and the appeal dismissed by the Federal Court of Appeal (A-180-11).

Professor Norman Siebrasse of University of New Brunswick and author of the Sufficient Description blog, has an interesting discussion of the test for an interlocutory injunction in the context of this decision.