| CONTENTLAB 1933750 · TMA1178408 | CodeProject Solutions Inc. | 9 Electronics16 Paper35 Advertising+2 | Registered | 2023 |
| CONTENTYAK 1826775 · TMA1047945 · design | an individual | 35 Advertising | Registered | 2019 |
| Contenta 1580672 · TMA1021599 | CONTENTA INC. | 38 Telecommunications | Registered | 2019 |
| CONTENTSTACK 2359461 | CONTENTSTACK INC. | 42 Science | Pending | 2024 |
| CONTENTNAV 2295900 | Owner not listed | 9 Electronics42 Science | Pending | 2023 |
| CONTENTCARDS 2027582 | Owner not shown | 35 Advertising41 Education42 Science | Pending | 2020 |
| CONTENTSTRACK 1693042 · TMA979848 | Xactware Solutions, Inc. | 9 Electronics42 Science | Registered | 2017 |
| CONTENTFUL 2004442 · TMA1119099 | Contentful GmbH | 9 Electronics35 Advertising42 Science | Registered | 2022 |
| CONTINUANCE 1803736 · TMA1020600 | DAVID YURMAN IP LLC | 14 Jewellery | Registered | 2019 |
| CONTENT 1799426 · TMA1053009 · design | Ipsen Biopharm Limited | 42 Science | Registered | 2019 |
| CONTENTNOW 1723958 · TMA941582 | 1WorldSync, Inc. | 35 Advertising38 Telecommunications42 Science | Registered | 2016 |
| CONTENTS 1473975 · TMA791050 | Conair LLC | 9 Electronics16 Paper18 Leather+1 | Registered | 2011 |
| CONTENTION 1424319 · TMA816512 | MEC MOUNTAIN EQUIPMENT COMPANY LTD. | 25 Clothing | Registered | 2012 |
| CONTENTDM 1160526 · TMA674136 | OCLC, INC. | 9 Electronics | Registered | 2006 |
| CONTENTFLY. 2086763 · design | ContentFly Inc. | 35 Advertising42 Science | Pending | 2021 |
| CONTENTSQUARE 2359525 | an individual | 9 Electronics35 Advertising41 Education+1 | Pending | 2024 |
| CONTENTFINITY 2270156 | Fullerton Media Inc. | 9 Electronics35 Advertising41 Education+1 | Pending | 2023 |
| CONTENTSQUARE 2058374 · design | Owner not shown | 9 Electronics35 Advertising41 Education+1 | Pending | 2020 |
| CANDINEORGANIC 2279615 · TMA1269068 · design | Owner not listed | 31 Fresh | Registered | 2024 |
| CANTINA 2261320 · TMA1281196 | Cantina, Inc. | 9 Electronics35 Advertising42 Science | Registered | 2025 |
| CINOTON 2254891 · TMA1274514 | Shenzhen Xinyuetong Technology Co. Ltd. | 11 Lighting | Registered | 2024 |
| CENTMEHR 2228690 · TMA1252810 · design | Anqing Qianxun Trading Co. Ltd. | 28 Toys | Registered | 2024 |
| Cyhentoon 2227360 · TMA1252656 | Guangxi Hezhou Laining Electronic Commerce Co. Ltd. | 11 Lighting | Registered | 2024 |
| CENDANT 2189344 · TMA1280737 | an individual | 9 Electronics44 Medical | Registered | 2025 |
| CO2NTAIN 2156145 · TMA1232247 · design | Mitsubishi Heavy Industries, Ltd. | 40 Treatment | Registered | 2024 |