>published alongside a copy of the Apache 2.0 license (intended for the document warehouse API SDK), which officially sanctioned freely copying and using the code. So there is really nothing Google can do about it.

This sounds good to us, tech nerds, but I'm pretty sure law doesn't work like this.

At minimum, even if (clearly accidentally) putting a code next to a open source license world be legally binding, the person doing the leaking was not the intellectual property owner. Google will just - correctly - say, that the person that leaked the code had no right to do so, especially under free license.