Briefly describe the meaning, advantages and disadvantages of the principle of peripheral restriction.

A: When determining the scope of patent protection, it is strictly based on the written records of the patent claim, and other extended interpretations of the patent claim are not allowed. The record of the claims is the maximum scope of patent protection.

Advantages: it is beneficial to the public, on the one hand, it limits the artificial expansion of the patent protection scope, on the other hand, it can clearly present the patent protection scope to the public and reduce uncertainty.

Disadvantages: In the weakness of patent protection, a very good invention may not be effectively protected because of the omission in the writing of patent application documents. Compared with the central restriction principle, this principle puts forward higher requirements for the writing of patent application documents.