While Chinese patent legislation lacks provisions for bona fide acquisition, courts increasingly apply this doctrine to resolve patent disputes. However, courts have applied only the three basic requirements of bona fide acquisition to patent disputes without considering the relationship between the validity of unauthorized transfer contracts and bona fide acquisition. The application of the bona fide acquisition system requires that unauthorized transfer contracts be valid, which constitutes a fundamental rule for applying bona fide acquisition to property rights and should extend to patent rights acquisition scenarios. Article 850 of China’s Civil Code, which invalidates contracts infringing others’ technological achievements, renders unauthorized patent transfers void ab initio, creating a legal barrier to bona fide acquisition to patent rights, potentially rendering its judicial application unlawful. Solutions include narrowly construing the statutory invalid clause through textual limitation or purposive interpretation to neutralize its effect on bona fide acquisition; or preferably, deleting Article 850 to determine contract validity under general rules while preserving legislative space for future bona fide acquisition provisions in patent law.