| CUSTOMER 360 2190828 · TMA1278906 · design | Salesforce, Inc. | 42 Science | Registered | 2024 |
| CUSTOMBIOTECH 1842163 · TMA1044606 · design | Roche Diagnostics GmbH | 1 Chemicals5 Pharmaceuticals9 Electronics+2 | Registered | 2019 |
| CUSTOMBIOTECH 2293130 · design | Roche Diagnostics GmbH | 1 Chemicals5 Pharmaceuticals42 Science | Pending | 2023 |
| CustomChill 1702585 · TMA925175 | LG ELECTRONICS INC. | 11 Lighting | Registered | 2016 |
| CUSTOMVITE 1348242 · TMA767320 | Stella Pharmaceutical Canada Inc. a Canadian corporation | 5 Pharmaceuticals | Registered | 2010 |
| CUSTOMPOINT 1333219 · TMA709606 | R.R. DONNELLEY & SONS COMPANY | 42 Science | Registered | 2008 |
| CustomSwitch 1096047 · TMA621232 | ROYAL BANK OF CANADA | 36 Finance | Registered | 2004 |
| CustomsCity 2303461 · design | Owner not listed | 9 Electronics42 Science | Pending | 2023 |
| CUSTOMBUYZ 2273596 · design | Owner not listed | 25 Clothing35 Advertising | Pending | 2023 |
| CUSTMBITE 2075080 | Dental Choice Holdings LLC | 3 Cosmetics10 Medical | Pending | 2021 |
| COOKIETIME 2200608 · TMA1264087 · design | Sapporo Holdings Limited | 30 Coffee | Registered | 2024 |
| CUSTUNING 2200123 · TMA1238505 · design | Custuning Auto International Ltd. | 12 Vehicles | Registered | 2024 |
| CUSTOMTUNE 2192154 · TMA1234811 | BOSE CORPORATION | 9 Electronics | Registered | 2024 |
| CASTINE 2190348 · TMA1158457 | KOHLER CO. | 11 Lighting | Registered | 2022 |
| COSTHEME 2188757 · TMA1232740 | Shenzhen Qianhai Kunhui Culture Co. Ltd. | 25 Clothing | Registered | 2024 |
| CUSTONOMY 2173980 · TMA1226094 · design | Custonomy Company Limited | 36 Finance42 Science | Registered | 2024 |
| CostEngine 2173727 · TMA1213555 | Delta Cleantech Inc. | 9 Electronics35 Advertising36 Finance | Registered | 2023 |
| Cokden 2173702 · TMA1224551 | SUI CHENG LIMITED | 11 Lighting17 Rubber21 Housewares | Registered | 2024 |
| CostEngine 2167593 · TMA1216378 | Delta Cleantech Inc. | 9 Electronics | Registered | 2023 |
| CHISTAIN 2078051 · TMA1164765 | an individual | 21 Housewares | Registered | 2023 |
| CASDON 2077301 · TMA1203846 | Casdon Limited | 16 Paper20 Furniture28 Toys | Registered | 2023 |
| chocotein 2015032 · TMA1131130 | an individual | 30 Coffee | Registered | 2022 |
| CUSTOMFX 2008440 · TMA1239344 | Conair LLC | 8 Hand | Registered | 2024 |
| CAXTON 2001592 · TMA1146510 · design | an individual | 15 Musical | Registered | 2022 |
| Costonome 1998774 · TMA1125784 | an individual | 16 Paper41 Education42 Science | Registered | 2022 |