a medicine sold without a prescription in drugstores or by sales representatives, and usually protected by a trademark.
a medicine distributed by a company having a patent on its manufacture.
a medicine protected by a patent and available without a doctor’s prescription

patent medicine pat·ent medicine (pāt’nt)
A nonprescription drug or other medical preparation that is often protected by a trademark.


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  • Patent-office

    noun 1. (often initial capital letters) a governmental agency that administers and regulates patents and trademarks, in the U.S. forming a division of the Department of Commerce. /ˈpætənt/ noun 1. a government department that issues patents Pat. Off

  • Patentor

    [pat-n-ter, pat-n-tawr or, esp. British, peyt-, peyt-] /ˈpæt n tər, ˌpæt nˈtɔr or, esp. British, ˈpeɪt-, ˌpeɪt-/ noun 1. a person or official agency that grants . /ˌpeɪtənˈtɔː; ˌpæ-/ noun 1. a person who or official body that grants a patent or patents

  • Patent-right

    noun 1. the exclusive right granted by a patent, as on an invention. noun 1. the exclusive right granted by a patent

  • Patent rolls

    plural noun 1. (in Britain) the register of patents issued

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