How long does a patent for an invention last?
乔治：那么一般一顶专利的期限是多长时时间啊?。
When you have an invention, how do you decide if you can apply for a patent?
如果你有一项发明，如何判断是否可以申请专利呢？
How long is the duration of patent right for an invention according to the law?
根据这个法律。发明专利权的期限是多久？
How long is the duration of patent right for an invention according to the law?
根据这个法律。发明专利权的期限是多久？
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