| DOOCELL 1552134 · TMA882462 | Doosan Infracore America Corporation (A New York Corporation) | 7 Machines9 Electronics | Registered | 2014 |
| DUOCEL 0539147 · TMA312531 | an individual | 3 Cosmetics | Registered | 1986 |
| DUOSEAL 2023334 · TMA1269399 | EJ GROUP, INC. a legal entity | 6 Metal | Registered | 2024 |
| dCELL 1693878 · TMA1041161 | Tissue Regenix Limited | 5 Pharmaceuticals10 Medical40 Treatment+1 | Registered | 2019 |
| DUOSEAL 1523515 · TMA850476 | Selig Sealing Products, Inc. (a Delaware Corporation) | 6 Metal17 Rubber | Registered | 2013 |
| DUOSEAL 1415628 · TMA759048 | Gardner Denver Thomas, Inc. | 7 Machines | Registered | 2010 |
| DUOCAL 0503041 · TMA297708 | SHS INTERNATIONAL LTD | 5 Pharmaceuticals | Registered | 1984 |
| DEXCELL 2242369 | Gold Bond Building Products, LLC | 19 Building | Pending | 2023 |
| DOUCELLE 0645513 · TMA375294 | CASCADES CANADA ULC | 16 Paper | Registered | 1990 |
| DOUCELLE 0614898 · TMA356313 | Mosaic Manufacturing Ltd. | 3 Cosmetics | Registered | 1989 |
| DOCILA 2158000 · TMA1208910 | Hong Kong Herebuy Trading Co. Limited | 25 Clothing | Registered | 2023 |
| DUOSHEL 2116205 · TMA1166075 | an individual | 5 Pharmaceuticals10 Medical | Registered | 2023 |
| Daxwell 2109324 · TMA1177831 | Daxwell | 6 Metal8 Hand10 Medical+1 | Registered | 2023 |
| DEXCEL 1913037 · TMA1195042 | DEXCEL LTD. a legal entity | 3 Cosmetics5 Pharmaceuticals10 Medical+2 | Registered | 2023 |
| DIXCEL 1897820 · TMA1095063 · design | DJ HOLDINGS Co. Ltd. | 1 Chemicals12 Vehicles | Registered | 2021 |
| DUCALE 1789798 · TMA1042669 | Owner not shown | 32 Beer | Registered | 2019 |
| DOCCLE 1740124 · TMA966654 · design | Doccle.Up, Naamloze vennootschap (a limited company organised and existing under the laws of Belgium) | 35 Advertising36 Finance38 Telecommunications+1 | Registered | 2017 |
| DOCCLE 1740122 · TMA966650 | Doccle.Up, Naamloze vennootschap (a limited company organised and existing under the laws of Belgium) | 35 Advertising36 Finance38 Telecommunications+1 | Registered | 2017 |
| DAICEL 1533543 · TMA877385 · design | DAICEL CORPORATION | 1 Chemicals9 Electronics17 Rubber+2 | Registered | 2014 |
| DUZALL 1435824 · TMA766356 · design | an individual | 7 Machines8 Hand | Registered | 2010 |
| DOCOL 1360531 · TMA778381 | an individual | 6 Metal | Registered | 2010 |
| DUOSOLE 1310130 · TMA691374 | ASICS CORPORATION | 25 Clothing | Registered | 2007 |
| DUCALE 1280953 · TMA681657 | IMPORTATION DUCALE INC. | 18 Leather25 Clothing | Registered | 2007 |
| DCALL 1125253 · TMA590235 | GOLD LINE TELEMANAGEMENT INC. a legal entity | 9 Electronics16 Paper36 Finance+1 | Registered | 2003 |
| DOCOL 1091780 · TMA599409 | an individual | 11 Lighting21 Housewares | Registered | 2004 |