| CONFIGIT 2039907 · TMA1228732 | Owner not shown | 9 Electronics41 Education42 Science | Registered | 2024 |
| CONFISCATED 1921571 · TMA1103158 | an individual | 33 Wine | Registered | 2021 |
| Config 2195389 · TMA1284512 | FIGMA, INC. | 41 Education | Registered | 2025 |
| CONFIG 2026067 · TMA1283838 · design | Config Inc. | 9 Electronics42 Science | Registered | 2025 |
| CONFIGPRO 1860674 · TMA1092010 · design | ARTESYN EMBEDDED TECHNOLOGIES, INC. | 9 Electronics42 Science | Registered | 2021 |
| CONFIGURE 1807372 · TMA1027063 | Owner not shown | 3 Cosmetics | Registered | 2019 |
| CONFIGURE 1750384 · TMA950895 | Rubbermaid Commercial Products LLC | 6 Metal20 Furniture21 Housewares | Registered | 2016 |
| CONFIGURE 1313347 · TMA844156 | FINE AGROCHEMICALS LIMITED | 1 Chemicals5 Pharmaceuticals | Registered | 2013 |
| CONFIGURATIONS 1212295 · TMA686112 | RUBBERMAID INCORPORATED, a corporation of Ohio | 20 Furniture | Registered | 2007 |
| CONFIXX 2215634 · TMA1233962 | an individual | 1 Chemicals | Registered | 2024 |
| CONFYZA 2149717 · TMA1188775 | GLAXO GROUP LIMITED | 5 Pharmaceuticals | Registered | 2023 |
| CONFAST 2000828 · TMA1105633 | Windsor Fasteners LLC | 6 Metal | Registered | 2021 |
| CONFYCARE 1824117 · TMA1000059 · design | HUANGSHAN JINFU MEDICAL EQUIPMENT CO. LTD | 10 Medical | Registered | 2018 |
| COMBIGAN 1113303 · TMA582677 | AbbVie Corporation | 5 Pharmaceuticals | Registered | 2003 |
| COMFOSTAT 0783096 · TMA470020 | BAXI HEATING UK LIMITED | 9 Electronics11 Lighting | Registered | 1997 |
| CONFIXOR 0676404 · TMA399927 | AVEDA CORPORATION | 3 Cosmetics | Registered | 1992 |
| CONVOCAN 0413711 · TMA230817 | Huhtamaki, Inc. | 16 Paper | Registered | 1978 |
| CANFISCO 0376647 · TMA209008 · design | JIM PATTISON ENTERPRISES LTD. | 29 Meat40 Treatment | Registered | 1975 |
| CANFISCO 0151219 · TMDA49516 | JIM PATTISON ENTERPRISES LTD. | 29 Meat | Registered | 1930 |
| CONFOGEN 2352051 | an individual | 1 Chemicals5 Pharmaceuticals35 Advertising+1 | Pending | 2024 |
| CNMOFAXIN 2262491 · TMA1281390 | Guangdong Xinyingrong Pharmaceutical Technology Co. Ltd. | 3 Cosmetics | Registered | 2025 |
| Chmibasu 2257954 · TMA1277717 | Tongcheng Haoying E-Commerce Center | 28 Toys | Registered | 2024 |
| CMHFKKG 2252798 · TMA1271502 | Shanghai Buzhi Gardening Co. Ltd. | 21 Housewares | Registered | 2024 |
| COMPOSTABLES 2243961 · TMA1263143 · design | Owner not listed | 8 Hand16 Paper21 Housewares | Registered | 2024 |
| COMBOSYNC 2243877 · TMA1243402 | Owner not listed | 42 Science | Registered | 2024 |