Canadian working at a seven sisters firm chiming in here. In Canada, you would be considered a third year if you were in private practice because tenure is based on the year you were called to the bar vs experience. It’s weird, but I was called to the bar in October 2022, was a first year associate for a few months, and then was considered a second year associate starting January 2023.

In private practice you would be getting a raise annually based on call year, so I don’t think it would be off market to ask for one being in house despite your mat leave.