Does the law allow one technical solution to use part of another patented technical solution?

A: Yes.

Reason:

1. The "patent technical scheme" involved should be defined as the claim, not the content of the specification. If the technical scheme is recorded in the specification but not in the claim, the technical scheme does not belong to the patented technical scheme.

2. Article 17 of "Several Provisions of the Supreme People's Court on the Applicable Law in the Trial of Patent Dispute Cases" "The scope of protection of the patent right of invention or utility model shall be subject to the content of the claim, and the description and drawings can be used to explain the content of the claim" The scope of protection of the patent right mentioned in the first paragraph of Article 59 of the Patent Law refers to the scope determined by all technical features recorded in the claim, including the scope determined by features equivalent to the technical features.

Equivalent features refer to the realization of basically the same functions and effects as the recorded technical features by basically the same means, and ordinary technicians in this field can associate the features of alleged infringement without creative labor.

3. Whether the statutory patent of the court is infringed is judged by the principle of "universal application". Generally speaking, if the patented technical scheme contains multiple technical features, and the accused infringing product does not adopt one or more technical schemes in the patented technical scheme, the accused infringing product is not infringing.