| CORSTEM 1835784 · TMA1019075 · design | Circle Cardiovascular Imaging Inc. | 42 Science | Registered | 2019 |
| CORSTEM 1835713 · TMA1018289 | Circle Cardiovascular Imaging Inc. | 42 Science | Registered | 2019 |
| CROSSTEK 1778296 · TMA1021318 | Toyo Tire Corporation | 12 Vehicles | Registered | 2019 |
| CROSSTREK 1687361 · TMA980090 | SUBARU CORPORATION | 12 Vehicles | Registered | 2017 |
| CORSTOP 1732669 · TMA998658 | Avent, Inc. | 10 Medical35 Advertising40 Treatment+1 | Registered | 2018 |
| CORSET 1477566 · TMA789075 · design | Owner not shown | 4 Oils34 Tobacco | Registered | 2011 |
| CRYSTEK 1122042 · TMA587156 | Crystek Crystals Corporation a corporation organized under the laws of Florida | 9 Electronics | Registered | 2003 |
| CORISTEX 0514881 · TMA296679 | RATIOPHARM GMBH | 5 Pharmaceuticals | Registered | 1984 |
| CORSTAT 2372524 | Conductive Containers, Inc. | 16 Paper | Pending | 2024 |
| CrossTech 1593818 · TMA913721 | an individual | 6 Metal7 Machines8 Hand+3 | Registered | 2015 |
| CROSSTECH 0817672 · TMA504145 | The Coleman Company, Inc. | 9 Electronics17 Rubber | Registered | 1998 |
| CROSSTECH 0756369 · TMA452729 | W.L. GORE & ASSOCIATES, INC. | 24 Textiles25 Clothing | Registered | 1996 |
| CORROSTOP 0364628 · TMA201226 | PPG Architectural Coatings Canada, Inc./PPG Revêtements architecturaux Canada, inc. | 2 Paints | Registered | 1974 |
| Coursette 2071402 | an individual | 9 Electronics35 Advertising42 Science | Pending | 2020 |
| Craster 2253247 · TMA1271528 | Shenzhen Masite Machinery Co. Ltd. | 28 Toys | Registered | 2024 |
| Correctseq 2150690 · TMA1217332 · design | CorrectSequence Therapeutics Co. Ltd | 5 Pharmaceuticals42 Science | Registered | 2024 |
| CRST 1935106 · TMA1136736 | Board of Canadian Registered Safety Professionals | 45 Legal | Registered | 2022 |
| Carstork 1839585 · TMA1087758 | an individual | 12 Vehicles35 Advertising36 Finance | Registered | 2020 |
| CROSSTELLA 1819092 · TMA1020220 | TERUMO KABUSHIKI KAISHA, a Japanese corporation also trading as TERUMO CORPORATION | 10 Medical | Registered | 2019 |
| CRYSTEX 1773260 · TMA989240 | LATICRETE INTERNATIONAL, INC. | 19 Building | Registered | 2018 |
| CORESET 1505045 · TMA829670 | EastonHealth | 9 Electronics16 Paper35 Advertising+1 | Registered | 2012 |
| CORESTOR 1422037 · TMA777051 | SPACESAVER CORPORATION A WISCONSIN CORPORATION | 20 Furniture | Registered | 2010 |
| CRISTEL 0808854 · TMA551953 · design | Owner not shown | 11 Lighting21 Housewares | Registered | 2001 |
| CARSTAR 0742984 · TMA435431 | Carstar Franchisor SPV LLC | 37 Construction | Registered | 1994 |
| CRYSTEX 0461077 · TMA264158 | Flexsys Holdings, Inc. | 1 Chemicals | Registered | 1981 |