You can be 99.999% sure unless the engineer went through a long painstaking process to get Box or Uber to open-source and then re-license the code to MIT, it wa

You can be 99.999% sure unless the engineer went through a long painstaking process to get Box or Uber to open-source and then re-license the code to MIT, it was fully owned under traditional copyright by Box when it was originally authored. Actually, it gets fairly complicated, because he created a derivate work at Uber with with what is likely Box's IP.