A few to consider:

UNDERLYING RIGHTS
Rights owned in the screenplay, story, or basis for it (i.e. book, story etc)

PERFORMANCE RIGHTS
For your cast (i.e. the right to use their image for the film and things connected to it such as marketing)

MUSIC RIGHTS
For all the music used in the film

COPYRIGHT
Who owns the final film.

Regards,

Ben C.

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filmmaking.net
(Incorporating the Internet Filmmaker's FAQ)

Please note the opinions expressed here are those of the author only and do not constitute legal advice. The author cannot accept and liability whatsoever for inaccurate or outdated information contained within.
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Thankyou, much appreciated

claire