This question is basically just curiosity, no actual dispute. But a few years ago I scanned and uploaded http://www.forkosh.com/u715.html to my site, personally claiming copyright (see notice on that page) just so somebody would be asserting copyright. Then I pretty much forgot about the whole thing. But a few months ago, I coincidentally received two unrelated emails from fellow former (but >>much<< more recent:) students, both thanking me for putting my detailed notes online. That prompted me to google the teacher, and surprisingly finding him still at CCNY.
So I emailed him, forwarding both emails I'd received, and pointing him to my online notes in case they were actually still of any use. That started a five-or-six email exchange, during which I mentioned my copyright statement, explaining why I'd claimed it, and offering to transfer it to him, since I considered it his material, with me just the "scribe". But he never mentioned it, one way or the other, so I just left the copyright statement as-is.
But my curious question -- suppose there were a dispute. Who prevails, and why?