Cosco Shipping has filed an appeal with Peru's Constitutional Court, escalating a legal battle over the regulatory oversight of the Chancay port.
The move follows a recent decision by a Lima appeals court that granted the state regulator, Ositrán, full authority to supervise the infrastructure project.
This development marks a significant intensification of the political and legal challenges facing the Chinese state-owned operator in South America.
The dispute centers on the extent of state control versus private operational autonomy at the Chancay port, a major logistics hub.
By taking the case to the highest judicial level, Cosco is contesting the lower court's interpretation of regulatory powers.
The outcome will determine whether Ositrán retains broad supervisory rights or if the operator can maintain greater independence in its commercial activities.