That one time Apple patented a pizza box (2017)
theguardian.com
theguardian.com
The only problem I found with them was that they were flimsy and with heat and moisture they became much more flimsy. So, you had a serious risk of losing your lunch all over the floor, if you were carrying hot pizza.
IMO, regular cardboard boxes are still better, at least from the perspective of a consumer who doesn’t want to have to go back through the line and buy another pizza, because the first one fell out of the box and splattered all over the floor.