Badly hog cryptic? (9)

I believe the answer is:

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'badly hog' is the definition.
Although both the answer and definition are singular nouns, I can't see how one could define the other.

I don't understand the remainder of the clue.

Can you help me to learn more?

(Other definitions for copyright that I've seen before include "Patent" , "Sole entitlement to produce literary works" , "Legal control of literary or artistic work" , "Document granting exclusive right to publish" , "Protection for writer" .)

I've seen this clue in the Sydney Morning Herald.

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