You can use the database to query the patent validity of drugs. The database contains more than 4 million patents related to medicine in more than 50 countries and regions such as CN, WO, US and GB, covering patent information including patent name, owner, inventor, patent application date, priority number, patents of the same subject and so on.
Database query drug patent expiration time
You can filter keywords by patent number, patent name, patentee, indication, drug name, target, first priority number, patent of the same branch and inventor, or you can filter by fuzzy screening, precise screening, combination screening and advanced search (yes or no) according to the screening conditions of patent first publication date, patent application date, first priority date, patent type and patent publication number.
Inquiry method of patent expiration time
For example, enter "T-cell acute lymphoblastic leukemia" in the indication, then select "Product" in the product type and click Search to enter detailed data.
Example patent expiration time inquiry method
Click "Patent Publication Number" to enter the details page, and you can query the patent expiration date in the basic information. Besides the patent expiration date, you can also query the patent type, drugs, company information, feature overview, family patents and other data.
Total number of patents
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.