| CELLCENTRIC 2209486 · design | cellcentric GmbH & Co. KG | 1 Chemicals6 Metal7 Machines+6 | Pending | 2022 |
| CELLCENTRIC 2138068 | cellcentric GmbH & Co. KG | 1 Chemicals4 Oils6 Metal+7 | Pending | 2021 |
| COOLCONTROL 1896426 · TMA1114934 | DEUBLIN COMPANY | 6 Metal7 Machines | Registered | 2021 |
| CELSENTRI 1353137 · TMA824983 · design | PHIVCO UK II LIMITED | 5 Pharmaceuticals | Registered | 2012 |
| CELSENTRI 1227697 · TMA703521 | PHIVCO UK II LIMITED | 5 Pharmaceuticals | Registered | 2007 |
| coolsense 1819325 · TMA999852 | GOODMORNING.COM INC. | 20 Furniture24 Textiles | Registered | 2018 |
| COOLSENSE 1817220 · TMA1037711 | Trane International Inc. | 11 Lighting | Registered | 2019 |
| COOLOGIN 2240421 · TMA1261502 · design | Shenzhen vsann Technology Co. Ltd | 6 Metal8 Hand | Registered | 2024 |
| CLOAKINE 2223262 · TMA1244491 | REGENERON PHARMACEUTICALS, INC. | 42 Science | Registered | 2024 |
| CLIGANIC 2189489 · TMA1261263 | A to Z Beauty, LLC | 3 Cosmetics5 Pharmaceuticals | Registered | 2024 |
| CLIGANIC 2188317 · TMA1261258 | A to Z Beauty, LLC | 3 Cosmetics8 Hand | Registered | 2024 |
| COLLASKINS 2180169 · TMA1229468 · design | 80354 Newfoundland and Labrador Limited, DBA: 3F Waste Recovery | 31 Fresh | Registered | 2024 |
| CHILLSENSE 2163719 · TMA1272489 | Unifi, Inc. | 20 Furniture23 Yarns24 Textiles+1 | Registered | 2024 |
| CLICHOME 2148965 · TMA1242438 | Pelican Creations Inc. | 20 Furniture | Registered | 2024 |
| CLEESINK 2124433 · TMA1188503 · design | Hangzhou Cleesink Mechanical & Electrical Co. Ltd | 11 Lighting | Registered | 2023 |
| CLEESINK 2124431 · TMA1188501 | Hangzhou Cleesink Mechanical & Electrical Co. Ltd | 7 Machines | Registered | 2023 |
| Coolzon 2110286 · TMA1179251 | Shenzhen Kuyu Development Company Limited | 24 Textiles | Registered | 2023 |
| Chilison 2086244 · TMA1183814 | an individual | 9 Electronics | Registered | 2023 |
| COOLZONE 2073211 · TMA1205889 | FRUIT OF THE LOOM, INC. | 25 Clothing | Registered | 2023 |
| CILICON+ 2067427 · TMA1174547 · design | ALD GROUP LIMITED | 34 Tobacco | Registered | 2023 |
| CALLYSONIC 2066692 · TMA1174532 | Zhengzhou Chengwei Electronic Commerce Co. Ltd. | 21 Housewares | Registered | 2023 |
| CELLUSNACK 2063526 · TMA1157299 | an individual | 16 Paper | Registered | 2022 |
| CLASSEN 2060997 · TMA1236846 · design | Classen Holz Kontor GmbH | 6 Metal19 Building27 Carpets+2 | Registered | 2024 |
| CLAWSOME!! 2057947 · TMA1169828 | Strottman International, Inc. | 28 Toys | Registered | 2023 |
| CLICOMATIC 2056217 · TMA1153036 | Owner not shown | 7 Machines9 Electronics | Registered | 2022 |