对于已经公知的技术来说，公众有自由使用的权利，任何人都无权将它纳入其专利独占权的范围之内，否则就损害了公众的利益。
To public technology, people have rights to use them freely, so they are not in the range of patent monopoly, otherwise it will do harm to public.
专利赋予发明人在特定的时期内对该项发明的独占权。
A patent gives inventors exclusive rights to their inventions for a fixed period of time.
专利法给予发明人独占的，排它的权利去使用其发明或授权他人使用其发明。
Patent law gives an inventor the sole and exclusive right to exploit and to authorise another to exploit an invention.
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