| CUTLASS 2311099 | Saronic Technologies, Inc. | 9 Electronics12 Vehicles42 Science | Pending | 2024 |
| CUTLESS 1509698 · TMA818552 | INTERNATIONAL PAPER COMPANY | 16 Paper | Registered | 2012 |
| CUTLESS 0346801 · TMA194697 | Duramax Marine, LLC (an Ohio Company) | 7 Machines | Registered | 1973 |
| CATALUS 1932953 · TMA1159671 | ICF International, Inc. | 35 Advertising | Registered | 2023 |
| CATALUS 1879634 · TMA1098264 | SMC Powder Metallurgy, Inc. | 40 Treatment42 Science | Registered | 2021 |
| CATALYS 1729615 · TMA1061319 | Entreprises Émile Crevier Inc. | 1 Chemicals2 Paints3 Cosmetics+2 | Registered | 2019 |
| CATALYS 1515069 · TMA859390 | OptiMedica Corporation | 10 Medical | Registered | 2013 |
| CATALYS 1515068 · TMA859268 | OptiMedica Corporation | 37 Construction41 Education42 Science | Registered | 2013 |
| CSTYLES 1497007 · TMA823551 | 2964-3277 QUÉBEC INC. | 11 Lighting20 Furniture27 Carpets+2 | Registered | 2012 |
| CUDDLES 1373140 · TMA807007 | QUALITY GOLD, INC. an Ohio corporation | 14 Jewellery | Registered | 2011 |
| COTÉLAC 1193885 · TMA667881 | Owner not shown | 18 Leather25 Clothing | Registered | 2006 |
| CUDDLES 0589320 · TMA345723 | Can-Pet Distributors Inc. | 31 Fresh | Registered | 1988 |
| CATALIS 2191628 · design | Government Brands Holdings, LP | 36 Finance38 Telecommunications42 Science+1 | Pending | 2022 |
| CATALIS 2172213 | Government Brands Holdings, LP | 36 Finance38 Telecommunications42 Science+1 | Pending | 2022 |
| CSTYLES 2057366 · design | CSTYLES IMPORT-EXPORT INC. | 11 Lighting20 Furniture27 Carpets+1 | Pending | 2020 |
| CATALIGHT 2254546 · TMA1271615 · design | Catalight Foundation | 35 Advertising42 Science44 Medical | Registered | 2024 |
| CATWALK+ 2209255 · TMA1242865 · design | Owner not shown | 25 Clothing35 Advertising | Registered | 2024 |
| Catillac 2146084 · TMA1201803 | an individual | 20 Furniture | Registered | 2023 |
| CATALYST 2135868 · TMA1213115 | True Temper Sports, Inc. | 28 Toys | Registered | 2023 |
| CATALYX 2124726 · TMA1266760 | Catalx Management Ltd. | 36 Finance | Registered | 2024 |
| CATALYST 2117464 · TMA1184152 | LIGNETICS, INC. | 31 Fresh | Registered | 2023 |
| CAHtalog 2088831 · TMA1216004 | Neurocrine Biosciences, Inc. | 9 Electronics16 Paper35 Advertising+3 | Registered | 2023 |
| CATALYCO 2078847 · TMA1221990 · design | an individual | 1 Chemicals | Registered | 2024 |
| CATALYST 2078844 · TMA1141429 | A. O. SMITH CORPORATION | 9 Electronics | Registered | 2022 |
| CATALYST 2069949 · TMA1135857 | Primera Technology, Inc. | 9 Electronics | Registered | 2022 |