But prior art can be elusive.

但先前技术有时难以捉摸。

Novelty means a intellectual product is not a prior art.

新颖性是指一项技术知识未成为在先技术。

The fifth chapter is the comparative analysis on the prior art counterplead.

第五部分是对公知技术抗辩的比较分析。

Second, comparing the principle of the prior art and other correlative principles.

第二部分是公知技术抗辩原则与其他相关原则的比较。

These might have to do with things like prior art and tips on writing better patents.

这些标记可能与诸如现有技术和有关编写更好的专利申请的技巧等事情有关。