Generics battle brand names over mortality of drug patents.
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D004345:Drug Industry / Q000191:economics / Q000331:legislation & jurisprudence*; D016568:Drugs, Generic / Q000191:economics*; D004465:Economic Competition; D006801:Humans; D010330:Patents as Topic / Q000331:legislation & jurisprudence*; D014481:United States; D014486:United States Food and Drug Administration