名词中文翻译1
中文翻译：Unknown
同义词：
['Expired Patent', 'Expired Right', 'Invalid Patent']
例句：
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1.The company's expired patents are now being auctioned off.
该公司的过期专利现在正在拍卖。
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2. The government is considering reviving the expired patents to boost innovation.
政府正在考虑恢复过期专利以促进创新。
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3. The expired patents have been a major source of revenue for the company.
过期专利一直是公司的主要收入来源。