| CustomNext 1816353 · TMA1006521 | Ambry Genetics Corporation, a legal entity | 44 Medical | Registered | 2018 |
| CUSTOMPOINT 1333219 · TMA709606 | R.R. DONNELLEY & SONS COMPANY | 42 Science | Registered | 2008 |
| CUSTOMTUNE 2192154 · TMA1234811 | BOSE CORPORATION | 9 Electronics | Registered | 2024 |
| CustomLink 1851734 · TMA1025846 | WALDEMAR LINK GMBH & CO. KG | 10 Medical | Registered | 2019 |
| CUSTOMVUE 1745426 · TMA971248 | AMO Manufacturing USA, LLC | 44 Medical | Registered | 2017 |
| CUSTOMSEAL 1665277 · TMA1029365 | TRIVASCULAR INC. (CALIFORNIA CORPORATION) | 5 Pharmaceuticals10 Medical | Registered | 2019 |
| CUSTOMFEED 1665064 · TMA963657 | an individual | 10 Medical | Registered | 2017 |
| CUSTOMVUE 1607957 · TMA958589 | AMO Manufacturing USA, LLC | 9 Electronics10 Medical | Registered | 2016 |
| CUSTOMINK 1607085 · TMA911794 · design | CUSTOMINK, LLC | 25 Clothing | Registered | 2015 |
| CUSTOMINK 1607079 · TMA910935 | CUSTOMINK, LLC | 35 Advertising40 Treatment42 Science | Registered | 2015 |
| CUSTOMINK 1607077 · TMA919365 · design | CUSTOMINK, LLC | 25 Clothing35 Advertising40 Treatment+1 | Registered | 2015 |
| CUSTOMTECH 1580719 · TMA905395 | Custom Building Products, Inc. | 17 Rubber19 Building | Registered | 2015 |
| CUSTOMVITE 1348242 · TMA767320 | Stella Pharmaceutical Canada Inc. a Canadian corporation | 5 Pharmaceuticals | Registered | 2010 |
| CASTAMENT 1009034 · TMA535299 | BASF Construction Additives GmbH | 2 Paints19 Building | Registered | 2000 |
| CUSTOMLINE 0734633 · TMA439168 | DASHWOOD INDUSTRIES LIMITED | 19 Building | Registered | 1995 |
| CUSTOMLINE 0623568 · TMA365046 | The Chesterfield Shop (Ontario) Ltd. | 11 Lighting20 Furniture | Registered | 1990 |
| CUSTOMLINE 0501907 · TMA307792 | CertainTeed Ceilings Corporation | 6 Metal19 Building | Registered | 1985 |
| CustomKing 2318984 | Anhui Baba Rabbit Business Co. Ltd. | 21 Housewares | Pending | 2024 |
| CUSTOMERSAT 1513118 · TMA908896 | CustomerSat.com, Inc. | 35 Advertising42 Science | Registered | 2015 |
| CustomFirst 1354538 · TMA742458 | CUSTOMFIRST SOFTWARE INC. | 35 Advertising36 Finance37 Construction+8 | Registered | 2009 |
| CUSTOMSOUND 1198887 · TMA679427 | LENBROOK INDUSTRIES LIMITED | 9 Electronics | Registered | 2007 |
| CUSTOMERONE 0706342 · TMA419579 | FCA US LLC | 9 Electronics16 Paper41 Education | Registered | 1993 |
| CustomsCity 2303461 · design | Owner not listed | 9 Electronics42 Science | Pending | 2023 |
| CUSTOMFX 2008440 · TMA1239344 | Conair LLC | 8 Hand | Registered | 2024 |
| CUSTOMFLEX 1939391 · TMA1154554 | an individual | 10 Medical | Registered | 2022 |