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1. The company issued a new patent certificate to its latest invention.
该公司颁发了一项最新发明的专利证书。
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2. The patent certificate is the legal document that grants the inventor exclusive rightsto use the invention for a certain period of time.
专利证书是法律文件，授予发明者在一定时间内独家使用该发明的权利。
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3. The patent certificate will be valid for five years, after which it must be renewed.
专利证书有效期为五年，到期后需重新申请。