| COMBIDERM 0549561 · TMA342639 | ConvaTec Inc. | 5 Pharmaceuticals10 Medical | Registered | 1988 |
| COMBIDISC 1982822 · TMA1099080 · design | August Rüggeberg GmbH & Co. KG | 7 Machines | Registered | 2021 |
| COMBIDOME 1669329 · TMA1009151 | an individual | 6 Metal16 Paper20 Furniture | Registered | 2018 |
| COMBITEST 1298475 · TMA682875 | Ovo Fertility Inc. | 44 Medical | Registered | 2007 |
| CONFITEX 1931872 · TMA1115817 | RSD Holdings Limited | 5 Pharmaceuticals25 Clothing | Registered | 2021 |
| COMPEDES 1389854 · TMA745215 | Lely Patent N.V. a company organized and existing under the laws of the kingdom of the Netherlands | 19 Building27 Carpets | Registered | 2009 |
| COMBIT 1066247 · TMA589112 | combit Software GmbH | 9 Electronics35 Advertising37 Construction+4 | Registered | 2003 |
| COMBITOP 0670128 · TMA448184 | an individual | 16 Paper | Registered | 1995 |
| COMBITOP 0669163 · TMA443790 | an individual | 16 Paper20 Furniture | Registered | 1995 |
| COMVIDA 0652803 · TMA408275 | COMVIDA CORPORATION | 9 Electronics35 Advertising | Registered | 1993 |
| COMPITOX 0270739 · TMA130437 | NUFARM UK LIMITED | 5 Pharmaceuticals | Registered | 1963 |
| COMBITHERM 1226565 · TMA643394 | ALTO-SHAAM, INC. | 11 Lighting | Registered | 2005 |
| CONFIDENT? 2051995 · TMA1215896 | CONFIDENT GAMES Limited | 9 Electronics28 Toys41 Education | Registered | 2023 |
| COMPUDENT 1618424 · TMA892810 | Compudent Systems Inc. | 9 Electronics10 Medical37 Construction+2 | Registered | 2014 |
| COMBITROL 1119408 · TMA620640 | Roche Diagnostics GmbH | 1 Chemicals37 Construction | Registered | 2004 |
| COMBITUBE 0876435 · TMA542394 | Covidien LP | 10 Medical | Registered | 2001 |
| CONFIDENT 0848804 · TMA501142 | SWIMC LLC | 2 Paints | Registered | 1998 |
| CONFIDERA 2169031 | INTERNATIONAL FLAVORS & FRAGRANCES INC. | 35 Advertising42 Science | Pending | 2022 |
| canupdog 2342487 · TMA1285099 | Shenzhen Honghelong Trading Co. Ltd. | 9 Electronics | Registered | 2025 |
| compuda 2260731 · TMA1279509 | Guangzhou Bafubali Import and Export Trade Co. Ltd. | 18 Leather | Registered | 2024 |
| CHAINPATROL 2249312 · TMA1268660 | Owner not listed | 9 Electronics42 Science | Registered | 2024 |
| Cinpode 2227040 · TMA1252624 | Shenzhen Hongming Innovation Co. Ltd. | 18 Leather | Registered | 2024 |
| CANFITCAN 2217310 · TMA1246689 | Guangdong Xizhongxi Technology Co.,Ltd. | 9 Electronics12 Vehicles | Registered | 2024 |
| CONFETTI 2183279 · TMA1207954 | Crayola Properties, Inc. | 16 Paper | Registered | 2023 |
| COMFYTEMP 2156455 · TMA1214419 · design | Shenzhen Yicai Network Technology Co. Ltd | 11 Lighting | Registered | 2023 |