When constructing a retrieval type, we should pay attention to the fact that

When constructing the retrieval formula, we should pay attention to various writing methods of a word and connect them with OR to ensure the recall rate.

There are two contradictory requirements in patent retrieval: retrieval efficiency and leak-proof review. For the requirement of retrieval efficiency, retrieval types should include as few patents as possible, but for the requirement of leak detection, retrieval types need to include more and more comprehensive patents.

The construction of the first-generation retrieval style: as the first-generation retrieval style, the goal pursued is X-type patent documents, that is, patent documents that can affect the novelty or creativity of claims. Class X documents include all technical features of the claims. Because the retrieval form consists of retrieval elements, the X-type file includes all retrieval elements of the retrieval form.

Perfection of patent retrieval formula;

The constructed patent retrieval formula can only be said to be almost perfect. To achieve perfection, there is still one problem to be solved. The number of patents collected by the tenth generation retrieval method may be tens of thousands, and each extended generation retrieval method is very noisy, and the number of patents is growing on a dry basis. Reading in the conventional WeChat official account sort will be inefficient or even sleepy.

Conventional retrieval software can't solve this problem well. At this time, if the r/ (application number) of Patents software is used for ranking, because the ranking of patents is more sensitive to useful patents, the related patents can be ranked in the front more efficiently. We can try to establish a 22-generation search formula and use this method to quickly get suitable patents from more than 2,000 patents.