| COTZ 1986896 · TMA1098143 | FALLIEN COSMECEUTICALS, LTD. | 3 Cosmetics | Registered | 2021 |
| COTTAGE 1269165 · TMA707227 | Craft-Bilt Manufacturing Company | 22 Ropes | Registered | 2008 |
| COTTAGE 1067130 · TMA632309 | Owner not shown | 3 Cosmetics | Registered | 2005 |
| COTTAGE 0822231 · TMA480184 | Owner not shown | 31 Fresh | Registered | 1997 |
| COATS 2266767 · TMA1270300 | Waldencast UK Limited | 3 Cosmetics | Registered | 2024 |
| COTES 2231098 · TMA1253028 · design | Owner not shown | 11 Lighting40 Treatment | Registered | 2024 |
| Cotes 2231097 · TMA1253027 | Owner not shown | 11 Lighting40 Treatment | Registered | 2024 |
| Cotech 2165068 · TMA1188897 | 9091-4532 Québec inc. | 7 Machines | Registered | 2023 |
| Coitak 2153197 · TMA1237033 | Shenzhen Yixin Economic and Trade Co. Ltd. | 24 Textiles | Registered | 2024 |
| Coitek 2153195 · TMA1206433 | Shenzhen zhicheng bosi industrial co. LTD | 21 Housewares | Registered | 2023 |
| COTAKU 2100832 · TMA1174847 · design | Batch Craft LLC | 25 Clothing | Registered | 2023 |
| COATS 1924194 · TMA1126734 | J. & P. Coats, Limited | 23 Yarns24 Textiles26 Sewing | Registered | 2022 |
| CATCHY 1892613 · TMA1080979 | Intko Supply Ltd. | 21 Housewares | Registered | 2020 |
| COTEK 1803253 · TMA995227 · design | COTEK ELECTRONIC IND. CO. LTD. | 7 Machines9 Electronics | Registered | 2018 |
| COATS 1802854 · TMA1040409 · design | J. & P. Coats, Limited | 17 Rubber21 Housewares22 Ropes+1 | Registered | 2019 |
| COATS 1802852 · TMA1036203 | J. & P. Coats, Limited | 17 Rubber21 Housewares22 Ropes+1 | Registered | 2019 |
| COTECH 1737297 · TMA973392 · design | 9091-4532 Québec inc. | 6 Metal7 Machines12 Vehicles+1 | Registered | 2017 |
| CHATZ 1724496 · TMA989136 | TwigIT Inc. | 38 Telecommunications41 Education42 Science+1 | Registered | 2018 |
| CTTQ 1685416 · TMA974187 · design | CHIA TAI TIANQING PHARMACEUTICAL GROUP CO. LTD. | 1 Chemicals5 Pharmaceuticals | Registered | 2017 |
| CATSKY 1661428 · TMA899287 | Le Reve Beverages Inc. | 30 Coffee32 Beer | Registered | 2015 |
| COUTTS 1578134 · TMA1033275 · design | Coutts & Co. | 9 Electronics16 Paper24 Textiles+2 | Registered | 2019 |
| CITIZ 1413725 · TMA791587 | Owner not shown | 7 Machines11 Lighting | Registered | 2011 |
| COATEX 1403460 · TMA774886 · design | Owner not shown | 1 Chemicals2 Paints42 Science | Registered | 2010 |
| COATES 1264422 · TMA669389 · design | Coates Heater Company, Inc. | 11 Lighting | Registered | 2006 |
| COTCO 1007039 · TMA551905 · design | CreeLED, Inc. | 11 Lighting | Registered | 2001 |