An image for copyists: passing off rayon as silk?

A comment after the verdict in the Blurred Lines matter:

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Pharrell has readily admitted that Marvin Gaye is one of his idols, but it's silk and rayon," King said. "If this is the way the law is going to go, then the creator of rayon better look behind him for lawsuits from the owners of silk, because, even though they feel the same they are structurally, completely different just like these songs."
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From billboard, talking about Howard King