Don’t worry if the defendant infringes the patent. Follow the following process and you will basically know whether you have actually infringed! 1. To confirm whether the patent right is valid, please go to the official website: China Patent Inquiry System/, public inquiry → click to enter → agree to the above statement → continue → enter the patent number → query, click on the publication information and fee information, you can know the patent status (issue the document There is a registration procedure notice in the information, and the patent will be maintained only if the annual fee is continuously paid in the payment information). 2. To check whether the infringed patent is indeed valid, please compare the claims of the patent's authorized text (not the public text) with your product to see whether every technical feature of your product is in compliance with the requirements. falls within the scope of its claims. Each claim represents a complete scope of protection and needs to be compared item by item. As long as any of its features are not included in your product, it does not constitute infringement and you can just ignore it. 3. If it is really an infringement, why would it be considered an infringement if your product contains the content recorded in the claim (usually claim 1, which is the claim at the top)? Yes. At this time, the following measures can be taken: (1) Request to declare the patent invalid. Please hire a professional patent attorney to do this. (2) When conditions permit, using the right of prior use to defend against the Patent Law (2008 Edition) Article 69 shall not be regarded as infringement of patent rights under any of the following circumstances: the same product has been manufactured before the patent application date, and the same product has been used The method or necessary preparations for manufacture and use have been made, and the manufacture and use will only continue within the original scope; this is the principle of prior use, and its purpose is to protect the industrial investment made by the prior user in relation to an invention from causing waste. But you need to provide evidence to prove your right of prior use. (3) If the patent cannot be invalidated and there is no preemptive right defense condition, negotiate and reconcile with the other party. When you are at a loss, the wisest solution is to negotiate with the other party and try to sign an implementation license contract with the patentee. Minimize your own losses. (4) You also have related patents. Cross-licensing is a good idea. If your patent is also valuable to the other party, the two parties can negotiate amicably and cross-license the patent, which is mutual benefit. Everyone develops together and develops together. Use it hard.