| COVISON 1685944 · TMA1034556 | Saint-Gobain Performance Plastics Corporation | 17 Rubber | Registered | 2019 |
| COVEXIN 1672306 · TMA966102 | an individual | 5 Pharmaceuticals | Registered | 2017 |
| COPESAN 1633341 · TMA902709 | Copesan Services, Inc. | 37 Construction44 Medical | Registered | 2015 |
| COVISINT 1544193 · TMA843821 · design | Covisint Corporation | 9 Electronics38 Telecommunications42 Science | Registered | 2013 |
| COVISINT 1058008 · TMA644007 | Covisint Corporation | 9 Electronics | Registered | 2005 |
| COVISINT 1057999 · TMA640723 | Covisint Corporation | 38 Telecommunications | Registered | 2005 |
| COVISINT 1057995 · TMA644141 | Covisint Corporation | 35 Advertising42 Science | Registered | 2005 |
| COVAXIN 2112833 · TMA1256113 | Bharat Biotech International Limited | 5 Pharmaceuticals | Registered | 2024 |
| CIVASAN 2332470 · design | an individual | 3 Cosmetics | Pending | 2024 |
| ChiPigments 2248290 · TMA1267309 | Phi Chi 1350 LLC | 16 Paper | Registered | 2024 |
| CAPXON 2246795 · TMA1265859 · design | Owner not listed | 6 Metal9 Electronics | Registered | 2024 |
| CHEVIGNON 2238159 · TMA397273 | an individual | 25 Clothing | Registered | 1992 |
| CHEVIGNON 2238158 · TMA397273 | Owner not listed | 2 Paints3 Cosmetics9 Electronics+7 | Registered | 1992 |
| Cappuccine 2179391 · TMA1272570 | CAPPUCCINE SPECIALTIES, INC. | 30 Coffee | Registered | 2024 |
| CPYOSN 2161277 · TMA1200467 · design | Shenzhen Aoxu Technology Co.Ltd. | 28 Toys | Registered | 2023 |
| CPISM 2136891 · TMA1207478 | EnviroCert International, Inc. | 41 Education42 Science | Registered | 2023 |
| CAPGEN 2116209 · TMA1268248 | Capital Generation Holdings LLP | 35 Advertising36 Finance | Registered | 2024 |
| CAPGUN 2110132 · TMA1179248 · design | HAPPYTHINGS DESIGN & ENGINEERING LIMITED | 11 Lighting21 Housewares | Registered | 2023 |
| CAVISION 2107846 · TMA1171481 · design | Cavision Enterprises Ltd. | 9 Electronics | Registered | 2023 |
| COFICINÉ 2092750 · TMA1233244 | an individual | 35 Advertising36 Finance41 Education | Registered | 2024 |
| CoVaximab 2034602 · TMA1138665 | PnuVax Incorporated | 5 Pharmaceuticals | Registered | 2022 |
| Cevzomi 2023948 · TMA1155046 | Daiichi Sankyo Company, Limited | 5 Pharmaceuticals | Registered | 2022 |
| Cubissimo 1991889 · TMA1141798 | DJECO | 28 Toys | Registered | 2022 |
| COEFFICIENT 1990526 · TMA1124964 | Coefficient Management Company Corporation | 35 Advertising | Registered | 2022 |
| CPCHEM 1985701 · TMA1098630 | Chevron Phillips Chemical Company, L.P. | 1 Chemicals | Registered | 2021 |