If it is to inquire about the expiration time of patents, it is suggested to use the "Global Medical Patent Database" to inquire about the expiration time of medical patents.
The database contains more than 4 million patents related to medicine in more than 50 countries and regions such as China, the United States and Britain. , covering patent information including patent name, owner, inventor, patent application date, priority number, patent of the same subject and other information. It aims to provide data support, service support and innovation fulcrum for the government, parks, medical enterprises, universities and various professional service institutions through the collection, integration, analysis, correlation, retrieval and push of medical patent big data, as well as data mining, knowledge discovery and policy analysis based on artificial intelligence.
Patent database
You can filter keywords by patent number, patent name, patentee, indication, drug name, target, first priority number, patent of the same branch and inventor, and you can also filter the date of patent first publication, patent application date and first priority date, and filter the conditions such as patent type, patent publication number, fuzzy screening, accurate screening, combination screening and advanced search (yes or no).
For example, enter "T-cell acute lymphoblastic leukemia" in the indication, then select "product" in the product type and click Search to enter the detailed data, and then click "patent publication number" to enter the detailed page. In the basic information, you can query the patent expiration date. Besides the patent expiration date, you can also query the patent type, drugs, company information, feature overview, family patents and other data.
Expiration time of drug patent
Many generic drug companies will not wait until the original drug is listed, but will try their best to be approved for listing in advance, for example, by challenging patents. With the permission of these laws and regulations, an original drug can not be questioned except the compound patent (which expires first), and other patents including crystal form, preparation and use may be questioned. Once the challenge is successful, the patent will be terminated, and generic drugs can be listed in advance to obtain huge benefits.