HANGZHOU, China: Hikvision is pushing back against Washington's latest move to deepen restrictions on Chinese telecom equipment, filing a legal challenge to a new U.S. rule that broadens the government's power to halt sales of technology it considers a security threat.

The Chinese manufacturer said that its U.S. unit had petitioned for judicial review of a Federal Communications Commission decision adopted in October. The FCC voted 3-0 to block new approvals for devices containing parts from companies on its "Covered List," and to give the agency authority to bar certain equipment that had previously been approved.

Hikvision argued the regulator had overstepped its mandate, saying the FCC "seeks to retroactively curtail lawful authorizations without a sufficient legal or evidentiary basis."

The U.S. has steadily tightened restrictions on Chinese telecom and surveillance firms over concerns about national security and data access, prompting companies like Hikvision to contest the measures in court.