I can not remember the name of the service, When i did IT support I encountered it all the time.
I think it was owned by MacMillan publishing.
Basically they had "all" law cases online from all common wealth countries, USA and other major countries.
Law is set by precident. So the decisions of previous cases are very important.
I think they charged $0.50 to $1 for every case you retrived.
Not rocket science. But they had spent millions digitizing all of these cases.
I assume you're talking about Lexis-Nexis?