"Copywritten" probably means nothing, but if it did, it would have something to with copy writing, the act of writing for publication (usually commercial, usually not long-form).
Added: FYI "copyrighting" is not a conscious decision, or an action you can take. Copyright emerges automatically when you create a work, what they've done is defend their copyright in court, and the courts have mixed opinions on the matter.
copyrighted
"Copywritten" probably means nothing, but if it did, it would have something to with copy writing, the act of writing for publication (usually commercial, usually not long-form).
Added: FYI "copyrighting" is not a conscious decision, or an action you can take. Copyright emerges automatically when you create a work, what they've done is defend their copyright in court, and the courts have mixed opinions on the matter.