| COMTRAX 1803072 · TMA1030546 | Comtrax Logistics Solutions Inc. | 35 Advertising39 Transport40 Treatment | Registered | 2019 |
| COMTRAC 1622897 · TMA944601 | an individual | 7 Machines9 Electronics37 Construction+1 | Registered | 2016 |
| COMTRAD 1349303 · TMA725175 · design | COMTRAD STRATEGIC SOURCING INC. | 35 Advertising39 Transport | Registered | 2008 |
| COMTRAC 0703141 · TMA436756 | Huesker Synthetic GmbH | 6 Metal17 Rubber19 Building+2 | Registered | 1994 |
| COMTRAC 0691910 · TMA439393 | STOBER Drives, Inc. | 7 Machines9 Electronics11 Lighting | Registered | 1995 |
| COMTRAD 0608836 · TMA359361 | COMTRAD STRATEGIC SOURCING INC. | 35 Advertising | Registered | 1989 |
| COMTREX 0398983 · TMA226854 | an individual | 5 Pharmaceuticals | Registered | 1978 |
| CONTRUENT 2273119 | Owner not listed | 9 Electronics35 Advertising37 Construction+1 | Pending | 2023 |
| COMITROL 1915938 · TMA1130100 | URSCHEL LABORATORIES, INC. | 7 Machines | Registered | 2022 |
| COMETRON 1725114 · TMA938177 | Celestron Acquisition, LLC | 9 Electronics | Registered | 2016 |
| COMETRIQ 1596821 · TMA917450 | Exelixis, Inc. | 5 Pharmaceuticals | Registered | 2015 |
| CONTRAVE 1488558 · TMA1011811 · design | Nalpropion Pharmaceuticals LLC | 5 Pharmaceuticals16 Paper44 Medical | Registered | 2018 |
| CONTRAVE 1454998 · TMA1011818 | Nalpropion Pharmaceuticals LLC | 16 Paper44 Medical | Registered | 2018 |
| CONTRAVE 1306356 · TMA765793 | Nalpropion Pharmaceuticals LLC | 5 Pharmaceuticals | Registered | 2010 |
| COMATRIX 1135945 · TMA604343 | SpinTek Filtration, Inc. | 9 Electronics11 Lighting | Registered | 2004 |
| CONTREET 0738843 · TMA502735 | Owner not shown | 5 Pharmaceuticals | Registered | 1998 |
| COMITROL 0461559 · TMA261953 | URSCHEL LABORATORIES, INC. | 7 Machines | Registered | 1981 |
| COUNTREE 2262493 · design | Owner not listed | 29 Meat | Pending | 2023 |
| CONTRIK 2159809 · TMA1232278 · design | an individual | 9 Electronics | Registered | 2024 |
| CENTRUM 2082112 · TMA1203858 · design | GlaxoSmithKline Consumer Healthcare Holdings (US) LLC | 5 Pharmaceuticals | Registered | 2023 |
| CONTOUR 2011361 · TMA1260754 · design | Contour Landscape Group Inc. | 42 Science44 Medical | Registered | 2024 |
| CONTRA 1992686 · TMA1275139 | KONAMI DIGITAL ENTERTAINMENT CO., LTD., a legal entity | 9 Electronics16 Paper28 Toys+1 | Registered | 2024 |
| CONTRA 1956398 · TMA1220908 | Valens Agritech Ltd. | 34 Tobacco | Registered | 2024 |
| CENTRUM 1808988 · TMA1012248 · design | Haleon US Holdings LLC | 5 Pharmaceuticals | Registered | 2019 |
| CENTRUM 1808858 · TMA1031843 · design | Haleon US Holdings LLC | 5 Pharmaceuticals32 Beer | Registered | 2019 |