How do patents make money? How do foreign companies make money from patents?

Through market analysis, we can know whether there is any infringement. After we feel suspicious, we will investigate and collect evidence and finally take measures. Big companies eat big fish and generally sue bigger companies for infringement. Small companies have nothing to do, and they will basically not lose too much. It is very troublesome to go to court with a little control. A lawsuit was filed with a big company, and a lawsuit was filed, demanding that he compensate N million, which is almost the assets of the whole company. Winning is equivalent to bankrupting him and making an example of him. It is very useful to mainly rely on this to crack down on infringing opponents. Like the DVD market. On the other hand, in order not to be passive in the competition, it is necessary to develop more patents and apply as soon as possible to prevent being excluded. You can also make a patent reserve and use these patents to collect patent fees and go to court. Therefore, enterprises should operate legally, take the initiative to occupy the market, and do not forget to arm themselves with science and technology.