| Dayatech 2193176 | Ningbo High-tech Zone Dayatech Technology Development Co. Ltd. | 11 Lighting | Pending | 2022 |
| DIYTEACH 2070934 · TMA1160328 · design | Zhejiang Teach E-Commerce Co.Ltd | 6 Metal | Registered | 2023 |
| DUOTECH 1868664 · TMA1081610 · design | Keter Plastic Ltd. | 21 Housewares | Registered | 2020 |
| DAYTEK 1867889 · TMA1104934 | DAYTEK AUSTRALIA PTY LTD. | 6 Metal7 Machines8 Hand+5 | Registered | 2021 |
| DUOTECH 1825157 · TMA1064806 · design | Keter Plastic Ltd. | 20 Furniture | Registered | 2019 |
| DUOTECH 1798711 · TMA1050825 · design | Keter Plastic Ltd. | 19 Building | Registered | 2019 |
| DYTEC 1531008 · TMA845173 · design | NANTONG QIANGSHENG NEW MATERIALS TECHNOLOGY CO. LTD. | 6 Metal9 Electronics10 Medical+1 | Registered | 2013 |
| DUTECH 0897136 · TMA526785 | DUTECH MACHINERIE LTÉE | 6 Metal7 Machines16 Paper+2 | Registered | 2000 |
| DAYTEK 0734664 · TMA437987 · design | POSCO International Corporation | 9 Electronics11 Lighting37 Construction+1 | Registered | 1995 |
| DIATECH 0722428 · TMA421647 | Owner not shown | 10 Medical | Registered | 1993 |
| DIATECH 2308222 · design | Owner not shown | 10 Medical | Pending | 2024 |
| DITEC 1937383 · TMA1144979 | an individual | 6 Metal7 Machines9 Electronics+2 | Registered | 2022 |
| DOTCH 1935100 · TMA1123791 | TCL Communication Technology Holdings Limited | 9 Electronics | Registered | 2022 |
| Daytox 1761140 · TMA1001569 | L.A.B. COSMETICS GmbH & Co. KG | 3 Cosmetics5 Pharmaceuticals30 Coffee | Registered | 2018 |
| DETACH 1695235 · TMA983614 | Anatara Therapeutics Pty Ltd. | 5 Pharmaceuticals | Registered | 2017 |
| DIATEC 1602359 · TMA923179 | Owner not shown | 9 Electronics10 Medical35 Advertising+2 | Registered | 2015 |
| DIATEC 1562787 · TMA864314 | DIAMED LAB SUPPLIES INC. | 9 Electronics | Registered | 2013 |
| DOTECO 1310892 · TMA745678 · design | an individual | 7 Machines9 Electronics | Registered | 2009 |
| DYTEK 1005013 · TMA535280 | INVISTA Textiles (U.K.) Limited | 1 Chemicals | Registered | 2000 |
| DATEG 2262753 | Owner not listed | 9 Electronics | Pending | 2023 |
| DoItEco 2250201 | SAMSUNG ELECTRONICS CO. LTD. | 7 Machines9 Electronics11 Lighting | Pending | 2023 |
| DITCH 2187650 | DITCH LABS INC. | 42 Science | Pending | 2022 |
| DUTCH 1964551 | Precision Analytical Inc. | 42 Science44 Medical | Pending | 2019 |
| Diydeg 2228584 · TMA1252790 | Shenzhen Kelingli Technology Co. Ltd. | 11 Lighting20 Furniture21 Housewares | Registered | 2024 |
| DOODOGS 2193786 · TMA1218751 · design | Jinjang Xuanyu Trade Co. Ltd. | 25 Clothing | Registered | 2024 |