CNIPA Declares Nikon Z-Mount Patent Invalid in Viltrox Dispute

CNIPA has declared Nikon's Chinese Z-mount accessory communication patent fully invalid, per reader tips to Nikon Rumors — no official source confirmed yet. The invalidation was requested by Viltrox's parent company as a counter-move to Nikon's earlier Shanghai court lawsuit over the same patent. Nikon has three months to appeal; the patent remains in force in the meantime.