Despite the ruling, the song still remains under copyright in the UK and other countries - and caution should be exercised over its use, says intellectual property lawyer Mark Owen."As elements of the song are still potentially within the maximum copyright term it may be the case that someone still owns some rights to it," said Mr Owen, a partner at law firm Taylor Wessing."There are also complex questions as to what the impact of this ruling may be on uses outside the US, so film-makers here should not now rush into using the song without considering the impact of this judgment carefully."