Wang applied for a patent one year after he left his job, and there was no problem that the patent belonged to Wang.
But I don't know whether the patent applied by Wang is consistent with the equipment produced by the paper mill, and I don't know whether the paper mill produces the equipment, that is, whether the equipment was put on the market before Wang applied for the patent. If the patent was filed before Wang, the paper mill can request invalidation.
In addition, Wang told the paper mill that it should not win the case in law, because before Wang applied for the patent, the paper mill had begun to study and improve the equipment and was ready to produce it. Therefore, based on the law, paper mills can continue to produce at the original scale.
In addition, as mentioned upstairs, if Wang uses the paper mill not to disclose technical information to the public, he may touch other laws.
To sum up, in this case, Wang's lawsuit against the original paper mill should not win in any case.
Case 2:
The key here is that the two brothers set up factories in Fujian, and the funds are all from the brothers. Therefore, it can be understood that my brother's invention was completed by using the capital of the factory, that is, the material conditions of the factory. At the same time, the two sides have not reached an agreement on the ownership of the invention and creation, and the patentee of the patent application is a brother. Therefore, the invention should be a service invention.
Therefore, in this case, I should not win.