Eli Lilly sues Canada because it doesn't think it should have to prove its patents are "useful": http://www.politico.com/story/2013/09/eli-lilly-sues-canada-over-drug-patents-96743.html?hp=r9 …
@vgebler That's not how patent utility works. For Canadian patents to be valid, you _must_ have proved utility _in the filing_.
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@vgebler It's just one of the requirements, legally (http://en.wikipedia.org/wiki/Utility_in_Canadian_patent_law …)Thanks. Twitter will use this to make your timeline better. UndoUndo
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