American publications are called issuing, applying and granting patents.
The application number is 2+6, ***8 digits, the first two digits are serial numbers, and the last six digits are circular numbers, which means that the six digits of 000000-999999 are circulated in sequence.
The patent number is 7 digits. It consists of 1-7 digits, such as 5575 155, 5474 142, etc.
WeChat official account is 4+7, *** 1 1, and the first four digits are the year. Such as 200600000001,20050 158320, etc.
There will be a document type code after the number.
Document type identification code? Literature type description
A 1 patent application disclosure? Disclosure before authorization
A2 patent application disclosure (re-disclosure)? Disclosure before authorization
A9 Patent Application Publication (Amendment)? Disclosure before authorization
B 1 patent? Not made public before authorization.
B2 patent? It was made public before authorization.
C3 C2 c 1？ Re-check the codes B 1 and B2 originally used in the certificate. Are they used to grant patents now?
E reprinted patents remain unchanged.
The inventions registered according to law have not changed.
P 1 publication of plant patent application? Disclosure before authorization
P2 plant patent? Not made public before authorization.
P3 plant patent? It was made public before authorization.
P4 Plant patent application is open (re-open)? Disclosure before authorization
P9 Plant Patent Application Publication (Amendment)? Disclosure before authorization
s？ The design patent has not changed.
EP European patent office
A 1 description+search report
A2 only indicates
A3 Retrieves only reports.
B 1 examined and authorized patents
B2。 Patents modified after the objection procedure.
United States Patent and Trademark Office
A 1 publication of patent application
Re-publication of A2 patent application
B 1 not made public before authorization.
B2 has been disclosed before authorization.
China patent office
Patent application disclosure
C authorized version
Types and codes of American patent documents
Patent description (American utility model patent), document type identification number A(B 1, B2).
Publication of patent application, document type identification code (A 1)
American plant patent, document type identification code P(P3 P2)
Re-issued patent, document type identification code (E)
Re-examination certificate, literature type identification code B 1, B2(C 1, C3 C2).
Legal invention registration, document type identification number H.
American design patent, document type identification code