| CODEXIS 1130655 · TMA709230 | Codexis, Inc. (a Delaware Corporation) | 1 Chemicals | Registered | 2008 |
| CODISCOS 1306790 · TMA706079 | Codiscos International Corporation | 9 Electronics | Registered | 2008 |
| CEDEXIS 1812553 · TMA1055399 | CITRIX SYSTEMS, INC. | 42 Science | Registered | 2019 |
| CEUTICOZ 2234193 · TMA1256713 | Ceuticoz Dermacosmetics Inc. | 3 Cosmetics35 Advertising44 Medical | Registered | 2024 |
| CATECASE 2223437 · TMA1249968 | Huizhoushi Kairun Trading Co., Ltd. | 20 Furniture | Registered | 2024 |
| Chatkazz 2217733 · TMA1245528 | DSV Holdings Unit Trust | 43 Restaurants | Registered | 2024 |
| CUTIECHEWS 2098998 · TMA1189461 | an individual | 10 Medical14 Jewellery24 Textiles+1 | Registered | 2023 |
| CHATCASH 2056247 · TMA1129357 · design | FIRST COMMUNITY BANK, INC. (RURAL BANK) | 36 Finance | Registered | 2022 |
| CITYSAC 1986910 · TMA1117989 | The Lovesac Company | 20 Furniture | Registered | 2022 |
| CIDACOS 1813480 · TMA1059840 · design | an individual | 29 Meat30 Coffee | Registered | 2019 |
| CUTAQUIG 1807914 · TMA1065337 | an individual | 5 Pharmaceuticals | Registered | 2019 |
| CITYSIGHT 1792913 · TMA1001341 | CitySight Inc. | 9 Electronics45 Legal | Registered | 2018 |
| CATSECURE 1739749 · TMA991137 | Petline Insurance Company | 36 Finance | Registered | 2018 |
| CitiGeeks 1643568 · TMA889801 | an individual | 9 Electronics | Registered | 2014 |
| COATCHECK 1638662 · TMA912865 | Aegion Coating Services, LLC | 9 Electronics | Registered | 2015 |
| CYDESIGN 1567641 · TMA913823 | CyDesign Labs, Inc. | 9 Electronics42 Science | Registered | 2015 |
| COTTAGECOPPERS 1524932 · TMA824680 | Ontario Cottage Coppers Limited | 37 Construction42 Science44 Medical+1 | Registered | 2012 |
| CITYACCESS 1218506 · TMA669406 | PG Solutions Inc. | 42 Science | Registered | 2006 |
| CADDYSHACK 1175375 · TMA613227 | Warner Bros. Entertainment Inc. (a Delaware Corporation) | 9 Electronics25 Clothing28 Toys | Registered | 2004 |
| CCDESIGN 1093245 · TMA607806 | NEC AMERICA INC. | 9 Electronics37 Construction42 Science | Registered | 2004 |
| CUTCHECK 0873413 · TMA523504 · design | an individual | 7 Machines | Registered | 2000 |
| COTTAGECARE 0768320 · TMA483114 | COTTAGECARE, INC. | 37 Construction | Registered | 1997 |
| CITISIGN 0750294 · TMA445633 · design | Imperial Parking Canada Corporation | 6 Metal9 Electronics16 Paper+4 | Registered | 1995 |
| CADSHACK 0643347 · TMA503297 | CADSHACK LTD | 3 Cosmetics8 Hand9 Electronics+8 | Registered | 1998 |
| CUTQUICK 0621507 · TMA365915 | Andreas Stihl AG & Co KG | 7 Machines | Registered | 1990 |