How much is the patent change fee?

In the era of rapid development of knowledge economy, our patents, trademarks and copyrights can be transferred and traded accordingly; Patent trading is a very important way to reconfigure resources; Through patent transfer, people without patented technology can provide patented technology support, so that patents will not form a monopoly model; Patent trading and transfer will involve patent changes, so how to make patent changes and how much will it cost? How much does the patent change cost? There are two ways to change a patent. First, the way of change of inventors, applicants and patentees; Second, through the change of the principal-agent relationship between patent agencies and agents. If you apply for patent change in the first way, you need to apply to yourself all the time. If through the second way, you don't need an individual application, you can directly entrust an agency to apply. Regarding the change of 200 yuan by the inventor, the applicant and the patentee, a certain service fee is charged by the agency. The right to apply for a patent or the patent right may be registered with the patent administration department of the State Council after the applicant or the patentee has concluded a written contract with others, and the transfer of the right to apply for a patent or the patent right shall take effect from the date of registration. The materials needed for the transfer are the rights transfer contract and power of attorney signed by both parties; Patent change procedures are mainly coordinated by both parties and the contract can be signed well; In fact, the cost is relatively cheap. Here, I would like to remind the patentee to read some related matters of the contract before the patent is changed; For the transferor, it is enough to consider whether the patent should be transferred. After all, most patents are their own efforts; Mainly for the transferee, patent transfer needs to be familiar with every piece of information of the patent, such as patent age, patentee, patent address, patent transfer times, etc. These need to be carefully understood to prevent being cheated accidentally.