| CareSync 2311955 | Owner not listed | 44 Medical | Pending | 2024 |
| CoreSense 2200766 · TMA1223896 | an individual | 9 Electronics | Registered | 2024 |
| CORESENSE 1533650 · TMA903553 | Emerson Climate Technologies, Inc. | 7 Machines9 Electronics | Registered | 2015 |
| COREGINS 2152241 · TMA1206373 | Astrix Inc. | 3 Cosmetics5 Pharmaceuticals | Registered | 2023 |
| COREGINS 2037454 · TMA1148983 · design | an individual | 29 Meat30 Coffee | Registered | 2022 |
| CORZYNA 2031937 · TMA1266610 | Kye Pharmaceuticals Inc. | 5 Pharmaceuticals | Registered | 2024 |
| CORESCAN 1633758 · TMA932451 | an individual | 9 Electronics42 Science | Registered | 2016 |
| CORESCAN 1523263 · TMA865287 | GE Precision Healthcare LLC | 9 Electronics | Registered | 2013 |
| CORSINA 1285578 · TMA766209 | an individual | 2 Paints5 Pharmaceuticals25 Clothing+1 | Registered | 2010 |
| Careseng 1033343 · TMA550756 | Pegasus Pharmaceuticals Group Inc. | 5 Pharmaceuticals35 Advertising | Registered | 2001 |
| CORSINI 0219679 · UCA44474 | ABBEY NECKWEAR LTD. | 25 Clothing | Registered | 1953 |
| CORE2SCAN 1844038 · TMA1079437 · design | VELTEK ASSOCIATES, INC. | 9 Electronics | Registered | 2020 |
| CORROZINC 0461034 · TMA258631 | SWIMC LLC | 2 Paints | Registered | 1981 |
| CorreGene 2183608 · design | Corregene Biotechnology Co. Ltd | 5 Pharmaceuticals42 Science | Pending | 2022 |
| CORREGENE 2183591 · design | Corregene Biotechnology Co. Ltd | 5 Pharmaceuticals42 Science | Pending | 2022 |
| CORECONNECT 1804098 · TMA1040646 | C.R. BARD, INC. A LEGAL ENTITY | 41 Education | Registered | 2019 |
| CoreContact 1531590 · TMA863520 | The Canada Life Assurance Company | 35 Advertising41 Education44 Medical+1 | Registered | 2013 |
| CHARISMA 2290168 · TMA1270335 | Owner not listed | 27 Carpets | Registered | 2024 |
| CRESCENT 2264078 · TMA1283348 | KOHLER CO. | 11 Lighting | Registered | 2025 |
| CROISSANTON 2259141 · TMA1279297 | an individual | 30 Coffee35 Advertising | Registered | 2024 |
| CHARGENCO 2249639 · TMA1267426 | LEC Lighting Enhancement Corporation | 9 Electronics37 Construction | Registered | 2024 |
| CARSCNEN 2239737 · TMA1259973 · design | Jiafeng Yongrun Trade (Guangzhou) Co. Ltd | 4 Oils | Registered | 2024 |
| CRGSM 2231297 · TMA1253959 | an individual | 25 Clothing | Registered | 2024 |
| CRESCENT 2221699 · TMA1257909 | Apex Brands, Inc. | 7 Machines | Registered | 2024 |
| CERRXIAN 2204057 · TMA1240040 · design | an individual | 9 Electronics | Registered | 2024 |