A bid by billionaire Bruce Gordon's WIN Corporation to stop Nine Entertainment from streaming its channels into regional Australia over the internet has been rejected the NSW Supreme Court, in a blow to other regional broadcasters as they negotiate deals with their affiliates.

WIN, which launched the case in February, sought to argue that streaming was included in the affiliate agreement between itself and Nine.

Nine launched its 9Now service in early February, giving viewers access to the free-to-air broadcaster's regular 'linear' channels over the internet as well as on-demand programming.

The case was centred on the understanding of the word broadcast and whether live-streaming is included in that definition.