How do we know this? Addison Cameron-Huff, a technology lawyer based in Toronto, has conducted an ingenious analysis of 4,261 Supreme Court of Canada judgments that boils down some key statistical insights.
Cameron-Huff, who used to work as a software programmer, says the idea came to him as he mused about the odds of winning at the appeal level.
“I was considering whether you could make some sort of odds calculator,” he says, “and I thought, step one was to gather this data and take a look and see what is out there.”
Within a day, Cameron-Huff had written 500 lines of code that scoured thousands of case dockets to parse out wins and losses by province and area of law — and the results are eye-popping.
He was initially surprised, for instance, at just how few appeals actually win at the Supreme Court: just 5.8 per cent, although your odds are significantly better if you’re bringing a criminal appeal (8.5 per cent) and lower if you’re bringing a civil appeal (4.8 per cent).
“You hear about cases not being very successful at the Supreme Court, but I didn’t have a number attached to that,” says Cameron-Huff.
The provincial breakdown also prompted a double-take, with appeals from Ontario winning only 3.7 per cent of the time — the lowest among all provinces. Compare Ontario’s win percentage to Nova Scotia, where appellants at the SCC win nine per cent of the time; or from British Columbia, where they win 7.7 per cent of the time.
Why is Ontario such a bad place to appeal from? Cameron-Huff says he can only speculate.
“My guess is probably that the [Ontario Court of Appeal] is very good,” he says, “so [the SCC looks] at their decisions and they say, ‘That looks about right.’ Whereas with some of the other provinces maybe they have a bench that’s not as deep as the Ontario one.”
Cameron-Huff’s analysis also looked at the likelihood of victory based on area of law. Appealing a lower-court ruling on procedural law, for instance, is almost certain to end in tears — with 594 losses and only 13 wins.
What’s the worst-case scenario? “An Ontario civil case that has to do with property,” he says. “I think that’s the worst one. … You’re looking at less than a two-per-cent chance of winning probably.”
And for your best odds? Constitutional cases appealed “as of right” have a 14-per-cent chance of winning at the SCC. Cameron-Huff also suggests that as of right’ cases emanating from Quebec have a high likelihood of victory. “Eleven per cent of appellants win their Quebec criminal appeal.”
Anyone wanting to read the data or tinker with it can read the entire set in html or download it in JSON format. (A JSON viewer can also be downloaded here.)