These patents are usually useless, and they are all useless rubbish.
However, patent certificates have many uses. Such as: students get extra points in exams, enterprises declare high-tech enterprises, evaluate professional titles, reduce sentences, and use shares as intangible assets, and so on.
At present, the country has many policies to encourage patent applications, which have a positive effect on promoting the development of science, technology and economy.
The negative effect is the increase of junk patents.