According to the Nice Agreement on the International Classification of Goods and Services for Trademark Registration, the mobile phone case belongs to the ninth category, which includes

97 communication and navigation equipment

microphone 917, antenna 945, anti-radio interference equipment (electronic) 948, junction box (electric) 994, switch 9146 and sonar. Electronic signal transmitter 9227, transmitter (telecom) 9228, radio equipment 927, internal communication device 938, navigation instrument 9358, wireless telephone set 947, wireless telegraph set 948, radar equipment 9416, vehicle radio equipment 9417, telephone set 9423, remote control signal. Acoustic positioning instrument 9455, telegraph (device) 9467, radio antenna mast 9471, telephone microphone 9473, telex interrupter 9474, transmitter (telecom) 9488, modem 9611, answering machine 9629, videophone 9653, navigation instrument for vehicles (with. Radio pager 9673, satellite navigation instrument 9674, walkie-talkie 9677, complete set of hands-free tools for telephone 9688, signal transponder 9693, global positioning system (GPS) equipment 971, mobile phone with 973

※ carrier equipment C926, driving chopper C927, optical communication equipment C927. Telephone set C93, program-controlled telephone exchange equipment C931, semiconductor fish catcher C932, network communication equipment C9125.