In a nutshell, it was the law that licensed growers of medical marijuana were only allowed to grow for a single person; him or herself, or another person - but only one. The relevance of the judgment at issue is that it says that such licensed growers should be allowed to supply as many people as need the product, so long as they are prescribed the drug for medical reasons. Given that the Supreme Court of Canada won't hear an appeal of that judgment, that means that all appeals are exhausted, and the judgment is now the law: