On October 20, 2016, the Patent Reexamination Board published on its WeChat public number the decision of "Sogou v. Baidu Patent Invalidation Dispute" (which is known as "the first case" heardopenly because it is the first time that the Patent Reexamination Board invitedthe public to auditthe oral trial of a case) (Invention Title: METHOD AND SYSTEM FOR INPUTTING ARTISTIC CHARACTER/IMAGE INTO APPLICATION PROGRAM), declaring that the majority of the claims, including independent claims, are invalid, while the patent right to the claims containingfeature "the replacement rule of ASCII character(s)/ art image(s)"is maintained.