Patents are divided into invention patents, utility model patents and design patents. Generally speaking, a patented product can't explain what patent it is-if it is an invention patent, the non-patent holder needs the authorization of the patentee to produce it (according to the authorization agreement, he can pay the patent fee, transfer fee, etc.). ); If the utility model patent avoids the patent right from the structure or other aspects, there will be no infringement in production; Appearance patents are easier to avoid.
There are few real invention patents. In addition, the patent has a fixed number of years, and it will automatically expire when it reaches the fixed number of years. Patents that have not reached the age limit will also become invalid if the protection fee is stopped.