Shenzhen Wireless Space Network Technology Co., Ltd. registered the Weyou trademark on November 21, 2012. Sina’s Weyou logo was used on November 16, 2011, and the registration was applied for on February 21, 2013. One year apart. During this period, companies in other fields also registered to use the Weiyou trademark, and it was as difficult to obtain the right to use Sina's exclusive trademark as its UC products.