2. It is only for research purposes and does not infringe.
3. Personal use is not infringing
4. Do not infringe upon foreign patents that have not been patented in China.
5. Different schemes with similar functions and principles are not infringing.
6. If the inspired part is not written into the claim, there is no infringement.
7. A conclusion can only be drawn after the patent is comprehensively compared with the imitation product and the existing technology.
8. The equipment may not have a patent right, the patent right may not be within the validity period, or it may be an invalid patent within the validity period. ...