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PhysIOL files suit against Carl Zeiss Meditec regarding trifocal lens
PhysIOL has sued Carl Zeiss Meditec AG and its German distribution subsidiary for patent infringement, according to a PhysIOL news release.PhysIOL said the At Lisa tri 839MP, a trifocal lens from Carl Zeiss, infringes a patent and a utility model owned by PhysIOL, according to the release.