| CONTENTS 1473975 · TMA791050 | Conair LLC | 9 Electronics16 Paper18 Leather+1 | Registered | 2011 |
| CONTEND 2111728 · TMA1159470 | Owner not shown | 5 Pharmaceuticals10 Medical | Registered | 2023 |
| CONTEND 1887756 · TMA1103452 | Mosaic Sales Solution US Operating Co. LLC | 35 Advertising | Registered | 2021 |
| CONTENT 1799426 · TMA1053009 · design | Ipsen Biopharm Limited | 42 Science | Registered | 2019 |
| CONTEND 1771791 · TMA1040429 | Giant Manufacturing Co. Ltd. | 6 Metal12 Vehicles20 Furniture | Registered | 2019 |
| CONTANS 1052276 · TMA563727 | an individual | 1 Chemicals | Registered | 2002 |
| COMTAN 0806555 · TMA491860 | ORION CORPORATION | 5 Pharmaceuticals | Registered | 1998 |
| Contenta 1580672 · TMA1021599 | CONTENTA INC. | 38 Telecommunications | Registered | 2019 |
| CONTENIX 1505996 · TMA931529 | CONTENIX INC. | 42 Science | Registered | 2016 |
| CONTINO 2138011 · TMA1218187 · design | an individual | 33 Wine | Registered | 2024 |
| CONTINO 1806548 · TMA991949 | Life360 Innovations Inc. | 10 Medical | Registered | 2018 |
| CAMDEN 1701538 · TMA932024 | Camden publicité inc. | 35 Advertising42 Science | Registered | 2016 |
| CAMDEN 1684220 · TMA993829 | AB InBev UK Limited | 32 Beer | Registered | 2018 |
| CAMDEN 1419899 · TMA762583 | an individual | 12 Vehicles | Registered | 2010 |
| CAMDEN 1418526 · TMA808037 | Owner not shown | 9 Electronics | Registered | 2011 |
| CONTIN 0795524 · TMA470405 | an individual | 5 Pharmaceuticals | Registered | 1997 |
| CONTEMP 2308327 | Loggerflex Smart Devices Ltd. | 9 Electronics | Pending | 2024 |
| CAMDEN 2256800 | Owner not listed | 7 Machines9 Electronics | Pending | 2023 |
| CONTENDER 2023919 · TMA1202433 | an individual | 6 Metal7 Machines17 Rubber | Registered | 2023 |
| CONTINUUS 1919029 · TMA1095398 | Continuus Materials Intellectual Property, LLC | 40 Treatment | Registered | 2021 |
| CONTENDER 1894477 · TMA1107917 | Mosaic Sales Solutions US Operating Co. LLC | 35 Advertising | Registered | 2021 |
| CONTENDER 1879834 · TMA1087044 | APPLETON GRP LLC | 11 Lighting | Registered | 2020 |
| CONTENDER 1684969 · TMA937295 | Interprovincial Cooperative Limited | 5 Pharmaceuticals | Registered | 2016 |
| CONTENTDM 1160526 · TMA674136 | OCLC, INC. | 9 Electronics | Registered | 2006 |
| CONTENDER 0624141 · TMA369749 | Holley Performance Products Inc. (a Delaware Corporation) | 7 Machines | Registered | 1990 |