There are rewards for asking questions! The issue of patent priority?

First of all: the key question is whether their utility model completely covers your patent protection. That is, whether their invention essentially depends on your patent.

According to the law, if his technical scheme in Fang Faming is essentially different from the technical scheme you invented, it does not constitute infringement.

Of course, this must be technically demonstrated. It depends on how the patent management department determines it. You also need to produce evidence in your favor. I am a technical idiot and don't understand.

If it is completely covered, it is infringement. Partial dependence, violation of that part. Nothing at all does not constitute infringement.

Second: Whether your first patent reform belongs to the invention and creation of the same theme is left to the Patent Office.

Patent is a very technical thing, which needs specific case analysis. I can't identify some problems that require professional knowledge. It needs some technical personnel to complete it, or you can come up with strong evidence yourself.

I hope your application is successful.