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Home » Post-Approval Patent Thickets Protect America’s Priciest Drugs, Study Says
Post-Approval Patent Thickets Protect America’s Priciest Drugs, Study Says
More than 1,400 patents and patent applications — most filed years after drug approval — protect the US’ 10 top-selling drugs, heading off competition from generics or biosimilars for decades, a new study has found.