For example, we all know what a chair is. The basic description is this: it has supporting legs, backrest and sitting appliances. The aggregation of these three features can be regarded as a standard essential patent. Because there is a stool without a backrest and a sofa without legs, I don't know what it is called.
Since you want to make a chair, make it three-legged, four-legged, one-legged, bent back and straight back. These compositions do not affect the recognition as chairs. These can be regarded as unnecessary standard patents.
For the obligee of the standard essential patent that affects the product identification, the lethality is decisive to the industry, because if the product is not produced according to the standard essential patent, the product will not be realized or enter the market. Therefore, for the sake of commercial prosperity, the right holder of standard essential patent must give compulsory authorization to the enterprises involved in the patent according to the principle of "fairness, reasonableness and non-discrimination".
Compulsory license means that standard essential patents cannot be used to attack competitors in the same industry. Competitors need to be authorized. To some extent, this prevents the obsolescence of public products and the necessary holders of standards from forming a market monopoly position. For example, with the technology of 4G communication, 1000 yuan mobile phone can also communicate with 4G, and flagship machine can also communicate with 4G.
The principle of "fairness, reasonableness and non-discrimination" mainly involves the issue of license fees. To put it simply, the license rate of standard essential patents cannot be "fixed by people", nor can it be as high as it wants, which not only allows patent holders to make money, but also does not oppress the profit space of patent implementers and does not affect the implementation of their business strategies.