1 has a valid patent right.
2. There is legal infringement.
3. Infringement is illegal.
4. The infringer aims at production and operation (in a broad sense).
5, the actor without the permission of the patentee (including express and implied)
6. The actor is subjectively at fault (including intentional and negligent).
7. The technology/design scheme implemented by the actor belongs to the scope of patent protection.
.. The above seven elements are necessary and sufficient conditions for the establishment of patent infringement, and all of them are indispensable;
The purpose of handling or hearing patent infringement cases is essentially to judge whether the above seven requirements are met.