A patent can only have a few inventors at most.

Because the number of inventors is not stipulated in the patent law, it is generally believed that there is no limit to the number of patent inventors, that is, there is no limit to the number of inventors. The difference between patent inventor and patentee A patent inventor refers to a person who has made creative contributions to the substantive characteristics of invention and creation. In the process of completing an invention-creation, a person who is only responsible for organizing the work, providing convenience for the use of material and technical conditions or engaging in other auxiliary work does not belong to the inventor. Patent holder: refers to the owner and holder of the patent right. That is, when the patent application is approved, the patent applicant is granted the patent right. 1. Patent inventors can only be individuals, not units, and the obligee can be individuals or units. 2. The patent inventor is a reputation right and has no property right; The patentee has two aspects: the patent personal right and the patent property right, which can only be changed by the inventor but not transferred (the patent inventor will not change because of the transfer of the patent property right). 3. The patent inventor only enjoys the right to sign the patent, and does not want to own any other rights of the patent, and cannot control the transfer of the patent or stop the infringement. Inventions and utility models patented in Article 22 of the Patent Law of People's Republic of China (PRC) shall be novel, creative and practical. Novelty means that the invention or utility model does not belong to the prior art; No unit or individual filed an application for the same invention or utility model with the administrative department for patent in the State Council before the filing date, and it was recorded in the patent application documents published or announced after the filing date. Creativity means that compared with the prior art, the invention has outstanding substantive features and remarkable progress, and the utility model has substantive features and progress. Practicality means that the invention or utility model can be manufactured or used and can produce positive effects. The existing technology mentioned in this law refers to the technology known to the public at home and abroad before the date of application. Article 23 A design that has been granted a patent right does not belong to an existing design; Before the filing date, no unit or individual has filed an application with the patent administration department of the State Council for the same design, and it is recorded in the patent documents published after the filing date. Compared with the existing design or the combination of existing design features, the patented design should have obvious differences. A design that has been granted a patent right shall not conflict with the legal rights that others have obtained before the date of application. Existing designs as mentioned in this Law refer to designs known to the public at home and abroad before the date of application.