| DEEJO 1686960 · TMA977690 · design | an individual | 8 Hand | Registered | 2017 |
| DEESIO 2321508 · design | an individual | 14 Jewellery35 Advertising | Pending | 2024 |
| DECO 2271624 · TMA1266078 | Owner not listed | 11 Lighting | Registered | 2024 |
| DAECO 2174722 · TMA1206636 | DAEWON APPLIED ENG. CO. | 7 Machines | Registered | 2023 |
| DEGU 2164324 · TMA1222247 · design | Mak Premium Garment Trading Company | 12 Vehicles17 Rubber25 Clothing | Registered | 2024 |
| DEKCO 2159247 · TMA1219205 · design | GLAZERO INTERNATIONAL INC | 9 Electronics | Registered | 2024 |
| DEG 2024435 · TMA1202435 · design | Band & Orchestra Supplies, Inc. | 15 Musical | Registered | 2023 |
| DIEGA 1945347 · TMA1165035 | an individual | 18 Leather25 Clothing | Registered | 2023 |
| DEAKO 1893934 · TMA1111694 | Deako, Inc. | 9 Electronics11 Lighting20 Furniture | Registered | 2021 |
| DEKO 1848948 · TMA1156645 | 7912854 CANADA INC. | 20 Furniture | Registered | 2022 |
| DECO 1818357 · TMA1038924 · design | G-Mode Corporation | 9 Electronics25 Clothing28 Toys+1 | Registered | 2019 |
| DECO 1620743 · TMA882055 | Platinum Naturals Ltd. | 5 Pharmaceuticals | Registered | 2014 |
| DECCO 1583584 · TMA910241 | Owner not shown | 1 Chemicals5 Pharmaceuticals | Registered | 2015 |
| DECO 1552501 · TMA876793 | LX HAUSYS, Ltd. | 19 Building27 Carpets | Registered | 2014 |
| DÉSO 1519176 · TMA829899 · design | DÉSO BURGER INC. | 35 Advertising43 Restaurants | Registered | 2012 |
| DECO 1459764 · TMA775257 | DECO Windshield Repair Inc. | 37 Construction | Registered | 2010 |
| DEKIO 1441341 · TMA842259 | an individual | 35 Advertising38 Telecommunications41 Education+1 | Registered | 2013 |
| DESEO 1400098 · TMA814518 | J.LO HOLDING COMPANY LLC | 3 Cosmetics | Registered | 2011 |
| DEKO 1350542 · TMA717113 · design | Advantage Cochrane Sport Inc / Avantage Cochrane Sport Inc | 19 Building | Registered | 2008 |
| DESEO 1318796 · TMA736972 | J.LO HOLDING COMPANY LLC | 3 Cosmetics | Registered | 2009 |
| DECO 1001026 · TMA533241 · design | DECO ADHESIVE PRODUCTS (1985) Limited | 6 Metal16 Paper42 Science | Registered | 2000 |
| DEXCO 0892168 · TMA551453 | Corporation Dexco/Dexco Corporation | 9 Electronics35 Advertising42 Science | Registered | 2001 |
| DEXCO 0891748 · TMA551339 · design | Corporation Dexco/Dexco Corporation | 9 Electronics35 Advertising42 Science | Registered | 2001 |
| DESEO 0818684 · TMA507670 | Harlequin Enterprises ULC | 16 Paper | Registered | 1999 |
| DECCO 0679856 · TMA429842 | Tenco Westech Polymers Inc. | 1 Chemicals | Registered | 1994 |