Tag Archives: lawsuit

Confirmed: Nikon lost the patent lawsuit against Viltrox in China

By [NR] admin | Published: July 29, 2026

I have the full court ruling (all 25 pages are attached at the bottom of this post), and I can now confirm my report from yesterday: Nikon lost the patent lawsuit against Viltrox in China. The documents are in Chinese – here is the AI recap:

Posted in Nikon Lenses, Nikon Patents| Also tagged , | 345 Comments

It seems that Nikon lost the patent infringement lawsuit against Viltrox in China

By [NR] admin | Published: July 28, 2026

Several readers have contacted me to report that Nikon’s Chinese Z-mount patent (202010127062.4) was declared fully invalid by CNIPA: I have very limited informtion on this, and no official source, so here is the AI recap based on the tips I received (see previous coverage of the Nikon vs. Viltrox lawsuit): Update/confirmed – Nikon lost […]

Posted in Nikon Lenses, Nikon Patents| Also tagged , | 137 Comments

Viltrox filed a patent in China that involves the Nikon Z-mount

By [NR] admin | Published: June 2, 2026

Viltrox filed another patent in China that involves the Nikon Z-mount – here is the interpretation I got from AI translation:

Posted in Nikon Patents| Also tagged , , , | 9 Comments

Detailed report on the Nikon and third-party Chinese Z-mount lens manufacturers

By [NR] admin | Published: March 4, 2026

This post on Chinese social media details the situation with Nikon and third-party Z-mount lens manufacturers. Here is the translated AI recap:

Posted in Nikon Lenses| Also tagged , , | 108 Comments

Stores and distributors in China are removing all Sirui Z-mount lenses

By [NR] admin | Published: March 2, 2026

Several Chinese sources report that Sirui has removed Z-mount lenses from online stores. Apparently, all official Sirui stores and most distributors have removed all Z-mount lenses from their Taobao listings (China’s largest e-commerce platform). Only a few distributors still have Z-mount links available online: The official Sirui website still lists several Z-mount lenses. In the US, […]

Posted in Nikon Lenses| Also tagged , , , | 472 Comments

Rumors from China: Nikon is suing Viltrox

By [NR] admin | Published: January 17, 2026

Rumors circulating on Chinese social media platforms claim that Viltrox is being sued by Nikon over a dispute regarding Z-mount lens licensing. Here is the translation:

Posted in Nikon Lenses| Also tagged , | 284 Comments

RED vs. Nikon patent lawsuit dismissed

By [NR] admin | Published: April 27, 2023

The RED vs. Nikon patent lawsuit has been dismissed:

Posted in Other Nikon stuff| Also tagged | 259 Comments