copyright-names-regexp

copyright-names-regexp is a variable defined in `copyright.el'.
Its value is

""

• This variable is safe as a file local variable if its value
  satisfies the predicate `stringp'.

Documentation:
Regexp matching the names which correspond to the user.
Only copyright lines where the name matches this regexp will be updated.
This allows you to avoid adding years to a copyright notice belonging to
someone else or to a group for which you do not work.

You can customize this variable.