I have come into contact with some engineers who are particularly reluctant to apply for patents for their products and software. Why? What concerns do they have?

It takes money and effort to apply for a patent. You need to pay an annual fee after obtaining a patent. In China, intellectual property rights are not protected, and it is even more expensive and laborious to sue after patent infringement. The relevant departments and institutions have no professional ethics, that is, these departments sold your patent to others. When applying for a patent, you should give your technical data to others for review, and as a result, you will "recognize the thief as the father and lead the wolf into the room." Sometimes your patented product is listed before your patent is approved. They match each other very well.