| CLOUDHALER 1904266 · TMA1096759 | an individual | 5 Pharmaceuticals | Registered | 2021 |
| CLOUDHALER 1745053 · TMA1038793 | an individual | 10 Medical44 Medical | Registered | 2019 |
| CALDOLOR 1441384 · TMA788547 | Cumberland Pharmaceuticals Inc. (a Tennessee corporation) | 5 Pharmaceuticals | Registered | 2011 |
| COLTALIN 0617331 · TMA371475 | FTM Holding Limited | 5 Pharmaceuticals | Registered | 1990 |
| COLDELITE 0285754 · TMA141103 | Owner not shown | 7 Machines | Registered | 1965 |
| Cooldele 2347126 | Owner not listed | 28 Toys | Pending | 2024 |
| Cladletun 2240694 · TMA1260074 | Shenzhen Yunsi Electronic Commerce Co. Ltd. | 21 Housewares | Registered | 2024 |
| CloudLocate 2145020 · TMA1204064 | Owner not shown | 9 Electronics38 Telecommunications42 Science | Registered | 2023 |
| CLOUDLIFTER 2134082 · TMA1176008 | an individual | 9 Electronics | Registered | 2023 |
| Cloudultra 2053671 · TMA1137631 | On Clouds GmbH | 25 Clothing28 Toys42 Science | Registered | 2022 |
| CLOTILD 1922545 · TMA1222669 | Owner not shown | 5 Pharmaceuticals9 Electronics10 Medical+2 | Registered | 2024 |
| CLOUDHEALTH 1867156 · TMA1084696 | VMware LLC | 9 Electronics42 Science | Registered | 2020 |
| CALDWELL 1858749 · TMA1071685 · design | THE CALDWELL PARTNERS INTERNATIONAL INC. | 35 Advertising42 Science | Registered | 2020 |
| CLOUDLINK 1840130 · TMA1081809 | Uptake Technologies, Inc. | 42 Science | Registered | 2020 |
| CALDWELL 1793704 · TMA992645 · design | ASSA ABLOY Fenestration, LLC | 6 Metal7 Machines9 Electronics+2 | Registered | 2018 |
| CLOUDIOLOGY 1791440 · TMA1035458 | Sivantos Pte. Ltd. | 9 Electronics10 Medical37 Construction+2 | Registered | 2019 |
| COLTELLO 1776048 · TMA1049186 | Delta Faucet Company | 11 Lighting | Registered | 2019 |
| CLADWALL 1758705 · TMA1007759 | 3FORM, LLC | 6 Metal | Registered | 2018 |
| CHILDLIFE 1736936 · TMA996684 | an individual | 5 Pharmaceuticals | Registered | 2018 |
| CLOUDLINE 1694748 · TMA1003348 | Hewlett Packard Enterprise Development LP | 9 Electronics | Registered | 2018 |
| CloudLink 1590487 · TMA867130 | Dell Inc. | 9 Electronics | Registered | 2013 |
| CLOUDLINE 1566676 · TMA855129 | Domaine Drouhin Oregon, Inc. | 33 Wine | Registered | 2013 |
| CloudLinx 1558365 · TMA942233 | Cloudlinx Hosted Services Inc. | 42 Science | Registered | 2016 |
| CloudLogix 1507814 · TMA814873 | Hostway Corporation | 42 Science | Registered | 2012 |
| CALLTELLIGENCE 1501686 · TMA823514 | Telmetrics Inc. | 35 Advertising | Registered | 2012 |