1, U.S. patent application number: XX/XXX, XXX is the U.S. patent application number, and the format is two/six digits, the first two digits are serial numbers, and the last six digits are cyclic numbers;
2. WeChat official account of American patent: USXXXXXXXXXXX is the WeChat official account of American patent, with the format of US+ four-digit year number+seven-digit serial number, and WeChat official account is only a number in the process of patent authorization;
3. Patent number of American patent: XXXXXXXX is the patent number of American patent, with 7 digits. It consists of 1-7 digits.
In addition, there will be a document type code after the number.
Document type identifier Document type description
A 1 patent application is published before authorization.
A2 Patent application is published (re-published) before authorization.
A9 Publication of Patent Application before Authorization (Amendment)
B 1 patent was not published before authorization.
B2 patent was published before it was granted.
The original codes of C 1, C2 and C3 re-inspection certificates B 1 and B2 are now used to grant patents.
E reprinted patents remain unchanged.
The inventions registered according to law have not changed.
The plant patent application was published before it was authorized.
P2 plant patent has not been published before authorization.
P3 plant patent was published before it was granted.
P4 publication of plant patent application before authorization (re-publication)
P9 Publication of Plant Patent Application before Authorization (Amendment)
American design patents remain unchanged.