| DETERMINE 1829727 · TMA1017459 | Determine Inc. | 9 Electronics42 Science | Registered | 2019 |
| DOWTHERM 0194723 · UCA26826 | THE DOW CHEMICAL COMPANY (A DELAWARE CORPORATION) | 1 Chemicals | Registered | 1947 |
| DETERMINED 1560107 · TMA912021 | EJ Group, Inc. | 6 Metal | Registered | 2015 |
| DAODERM 2200657 · TMA1223286 | an individual | 5 Pharmaceuticals | Registered | 2024 |
| DUODERM 1580842 · TMA851853 · design | ConvaTec Inc. (a Delaware corporation) | 5 Pharmaceuticals | Registered | 2013 |
| DUODERM 0771717 · TMA449688 | ConvaTec Inc. | 10 Medical | Registered | 1995 |
| DOTAREM 0713893 · TMA426942 | Owner not shown | 5 Pharmaceuticals | Registered | 1994 |
| DUODERM 0474631 · TMA280595 | ConvaTec Inc. | 5 Pharmaceuticals | Registered | 1983 |
| DETRUNORM 1516447 · TMA871272 | Apogepha Arzneimittel GmbH | 5 Pharmaceuticals | Registered | 2014 |
| DIÉTAROMA 0896723 · TMA539307 · design | an individual | 3 Cosmetics5 Pharmaceuticals9 Electronics+1 | Registered | 2001 |
| DIWITHERM 0854878 · TMA533204 | WIKA Alexander Wiegand SE & Co. KG | 9 Electronics10 Medical | Registered | 2000 |
| DAYDREAMING 2146453 · TMA1199189 | SA Designer Parfums Limited | 3 Cosmetics | Registered | 2023 |
| DAYDREAMER 2038741 · TMA1141343 · design | Bluebird and Co. Inc. | 18 Leather25 Clothing | Registered | 2022 |
| DEUTRAMED 1965717 · TMA1251740 | DEUTRAMED SOLUTIONS LTD. | 1 Chemicals | Registered | 2024 |
| DAYDREAM 1949337 · TMA1240562 | 11270702 Canada Inc. | 21 Housewares30 Coffee32 Beer+1 | Registered | 2024 |
| DAYDRINKER 1838881 · TMA1057869 | BOSTON BEER CORPORATION | 32 Beer | Registered | 2019 |
| DAYDREAM 1804866 · TMA1066189 · design | Google LLC | 9 Electronics42 Science | Registered | 2019 |
| DAYDREAM 1793432 · TMA1076485 | Google LLC | 9 Electronics28 Toys42 Science | Registered | 2020 |
| DUTRION 1686267 · TMA919673 | an individual | 1 Chemicals | Registered | 2015 |
| DAYDREAMER 1643008 · TMA920819 | Daydreamer Wines Inc. | 33 Wine35 Advertising40 Treatment+1 | Registered | 2015 |
| DAYDREAM 1624067 · TMA953133 | Google LLC | 9 Electronics42 Science | Registered | 2016 |
| DYTREM 1611306 · TMA875828 | Dytrem Corporation | 9 Electronics35 Advertising41 Education+3 | Registered | 2014 |
| dataARMOR 1600638 · TMA869024 | Librairie Renaud-Bray Inc. | 9 Electronics | Registered | 2014 |
| DYTREM 1506770 · TMA830538 · design | Dytrem Corporation | 9 Electronics35 Advertising41 Education+3 | Registered | 2012 |
| DAYDREAMER 1414816 · TMA765540 · design | Days Inns Worldwide, Inc. | 20 Furniture24 Textiles | Registered | 2010 |