WestlawNext Canada's Law Report Articles contains all articles, annotations and case comments that appear in Carswell law reports. These can be searched all together or by the topical law reporter eg: Reports of Family Law, Criminal Law Reports etc.
Case notes / comments are often contained in journal and law review articles. See the Journals & Journal Articles page in this Guide.
In addition, CanLII Connects provides authoritative legal commentary on court decisions. To find if your case has CanLII Connects commentary, click on the Headnote button under the case title.