Generally speaking, you can search the patent you are inquiring about according to the patent name or the patent applicant (patentee).
The patent application number in our country is regular, and we can see what kind of application it is by the number.
Patents filed after June 5438+ 10 in 2003 all adopt the pattern of 12- digit patent application number, the first four digits are the year of application, the fifth digit represents the patent type (1- invention, 2-utility model and 3- design), and the last seven digits are the patent acceptance number.
If the patent was filed before 10 in 2003, the patent number is only 8 digits, the first two digits indicate the year of application, the third digit indicates the patent type (1- invention, 2- utility model, 3- design), and the last five digits are the serial number. You can judge according to the rules of patent application number.