Then Michael Vaughan (14) followed him back to the pavilion with a copy-cat shot.

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If it goes ahead, Wal-Mart will enter via acquisition of local retailer Massmart which is, as the name suggests, a copy-cat company anyway, so it would seem all there is to talk about is price.

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One solution is to import generic drugs from countries such as India, which does a thriving trade in copy-cat pharmaceuticals because it is not yet obliged to recognise drug patents.

ECONOMIST: Patently troublesome