Chinese tech giant Huawei has filed a lawsuit in a local Chinese court accusing Taiwan-based chip firm MediaTek of patent infringement, seemingly after negotiations around patent fees broke down. In response, MediaTek stated on July 19 that the lawsuit has no significant impact on the company and they will not comment further about the details. “Differences over patent fees with Huawei began two or three years ago, but MediaTek considered the price was too high,” people familiar with the matter told local media outlet YiCai. According to the outlet’s sources, Huawei is suing MediaTek for patents related to cellular technologies, including 5G, 4G, and 3G, which indicates that Huawei is exploring the possibility of charging both smart device manufacturers and chipmakers for patent licenses in these fields. [YiCai, in Chinese]