Nikon is involved in a patent dispute with Viltrox, with reports indicating that Nikon has sued Viltrox for intellectual property infringement related to its Z-mount lens technology. The lawsuit has sparked concerns among users about the potential impact on the future of the Z-mount and compatibility with third-party lenses. The outcome and details of the dispute are unclear, with some reports suggesting that Viltrox plans to continue with its product roadmap despite the lawsuit.