When searching for a patent, there is a patent number, but what do you mean by "invalid" and "invalid"?

The patent application documentNo. 1 does not meet the requirements of preliminary examination, and the patent is invalid; The patent applicant withdraws or gives up after the publication of the application; Refusing to submit overseas application materials without justifiable reasons; The patent applicant fails to submit an application within the time limit without justifiable reasons; The application is deemed to be withdrawn; The rejected application for a patent for invention does not conform to the provisions of the Patent Law; Revocation and invalidation of patent right.

Invalid patent 1 can be used by any unit or individual for free, thus obtaining economic benefits. 2. Any unit or individual can improve invalid patents and implement them free of charge.

Invalid patent refers to a patent that has been authorized or published by the Patent Office. After certain legal procedures, it has lost the protection of the patent right or failed to obtain the protection of the patent right from beginning to end (the latter should be strictly called invalid application).

Invalid reason 1, the patent has passed the protection period; 2. The patent protection period is declared invalid; 3. The patentee fails to pay the annual fee or voluntarily gives up the patent right, resulting in the loss of patent protection; 4. Upon examination, the patent was not authorized.

Invalid patent literature database has been paid more and more attention by industries. Using published invalid patents, enterprises can produce or develop products on this basis. Avoid the risk of infringement. At the same time, it can also be beneficial to patent information and reduce R&D investment.