The principle of "comprehensive coverage" is usually applied to judge patent infringement, that is, the accused infringing product must have all the necessary characteristics recorded in the independent patent claim before it can be regarded as infringement, and there is no problem of partial infringement.
The Supreme People's Court's Interpretation on Several Issues Concerning the Application of Law in the Trial of Patent Infringement Disputes Article 7 When judging whether the technical scheme accused of infringement belongs to the scope of patent protection, the people's court shall examine all the technical features recorded in the patent claim.