1. Paper retrieval: Paper carrier is the main form of patent literature and the main object of retrieval.
The main advantages: the paper retrieval method is the least prone to mistakes and the most evidence-effective. However, the patent retrieval process is inefficient, time-consuming and laborious, easy to lose, and the printing and distribution cycle is long, so it is difficult to retrieve the latest information.
2. Software retrieval; Refers to patent literature retrieval including microfilm, computer magnetic media and CD-ROM.
The main advantages of microfilm and magnetic media are: small occupation space, high storage density, long storage time and easy copying of patent documents. However, the limited enjoyment of * * * limits its scope of use and the update speed is limited.
Extended data:
First of all, you can evaluate the possibility of patent application being authorized.
According to the investigation of foreign patent agencies, more than 66% of invention patents could not be authorized, most of which were due to the existence of previously published documents and the lack of novelty.
Second, it helps patent agents to better draft patent documents.
Through the preliminary patent search before the application, we can obtain the necessary information to understand the existing technology, so that we can compare the existing technology and describe the beneficial effects and creativity of the application, as well as the essential differences with the existing technology. This is very important for future substantive review.
Third, the preliminary patent search before application will improve the application scheme.
Through the preliminary search before application, we can get some relevant comparison documents, which are likely to contain references, which will help the applicant to improve the technical scheme, so as to better put forward the technical scheme and obtain the best protection effect.
Baidu encyclopedia-patent retrieval