In today's business society, the importance of patent rights is increasing day by day, and there are more and more lawsuits regarding patent ownership and use rights. In our country's laws, patent applicants are generally the patent owner and the designer of the patented invention. If the transfer of patent rights is involved, the patent rights need to be transferred and changed. How long does it take for the patent applicant to change. As far as our country's regulations are concerned, the trinity of patent owner, inventor and applicant is generally the same subject. A patent applicant refers to the person who applies for a patent. Except for the designer of a patented invention, which must be a natural person, both the patent owner and the applicant can be a natural person or an enterprise. Of course, in real life, there are many cases where patent rights are not one of the three. The patent applicant can be someone other than the patent owner and the designer of the patented invention. There are three specific situations: through a contract with the consent of the patented invention designer. Becoming a patent applicant, becoming a patent applicant through inheritance, or becoming a patent applicant by law. The last situation is mostly common in state-owned institutions. In addition to the three situations mentioned above, changes in other patent applicants can be changes in the owner of the patent right, that is, transfer and change of the patent right. This situation is the most common. Article 10 of my country’s Patent Law stipulates that the patent applicant and owner can make changes. Before we change the ownership of the patent, we need to prepare two documents: a declaration of change of the bibliographic item and a patent transfer contract. When filling in the declaration of change of the patent item, we should pay attention to the change item information column. In this column, the change item needs to be filled in accurately. , corresponding patent change information before and after application. After preparing the certification materials and related information for the change of the bibliographic items, you can apply to the State Intellectual Property Office for the change of patent ownership. The change time is generally half a month to a month, and it may take more than a month if the situation is more complicated. If the change of patent rights involves foreign citizens, you will need to prepare slightly more information, and the procedures will vary depending on the transferor and transferee. If the transferor is a foreign citizen and the transferee is a Chinese citizen, the original transfer contract that has been signed and notarized by both parties must be presented when making changes. If the transferor is a Chinese citizen and the transferee is a foreign citizen, in addition to the original visa and notarized transfer contract, the transfer approval document from the State Council's foreign trade and economic department and the science and technology administrative department must also be presented when making changes. If both the transferor and the transferee are foreign citizens, you only need to present the original transfer contract signed by both parties when making changes.