The above mentioned is the system of announcement of patent invalid which the article mainly talk about.

即本文讨论的专利权无效宣告制度。

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Even an invalid patent can be useful.

甚至一个无效的专利也将很有用。

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Greg Aharonian, who runs the Internet Patent News Service, a site devoted to intellectual property news, said he believed that at least some of Apple’s patents would be found to be invalid.

Greg Aharonian 经营着互联网专利新闻服务（致力于知识产权新闻的网站）这家网站。 他相信至少有一些苹果的专利将是无效的。

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The generic company typically contends that the patent is invalid or that there is no infringement.

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Teva initially claimed the patent was invalid due to obviousness, but eventually changed its defense to inequitable conduct.

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To make matters worse, the European Patent Office has filed a brief, also stating that the patent is invalid.

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