I'm not a lawyer nor play one on TV.   That said, I talk to a lot of them and have worked for firms that have to deal with this sort of issue.  Your milage may vary ....

On Tue, Nov 28, 2017 at 2:09 PM, Dan Cross <crossd@gmail.com> wrote:
I can't think of a great use case for embedding copyright data into an object file, however.
This is from some one who used to work for TPC who took out a copyright on every page in the phone directory.​

As I understand it from my legal folks, it is all post the Franklin/Apple case.    Making sure all object files also have legally recognized set of stamps in them.

I suspect one can argue with the judge that a single copyright notice are coving all of the SCCS stamps on from all the files shipped in the release (source or binary).  But just like putting a copyright on every page in the phone book, I think the argument is that a page can ripped from the phone book and a binary and can copied from a system.   Because of the 'motion' of the object, making sure every object has a mark is best.