Mootness is currently at issue in this Supreme Court case over whether a houseboat that doesn’t move is a vessel. The suit is actually against the houseboat under maritime law, and now the houseboat has been destroyed, but all of the parties are arguing that the case isn’t moot.
Also, Fisher v. University of Texas is probably on your radar because it involves the hot topic of affirmative action in higher education. What you may not know is that it could potentially raise standing and mootness questions as explained here, here, and here for example.
