Canon never released any official statements on the report that Viltrox was forced to stop selling RF-mount mirrorless lenses until today. The German site Photografix Magazin published the first official statement where Canon Germany indicated that third-party lenses infringe on their patent and design rights. Here is the full text:
"SHENZHEN JUEYING TECHNOLOGY CO.LTD, manufactures auto focus lenses for Canon RF mount under the brand name "Viltrox". Canon believes that these products infringe their patent and design rights and has therefore requested the company to stop all activities that infringe Canon's intellectual property rights."
Canon Germany
Viltrox: “We have been told by Canon to stop selling all RF mount products”