| DEKS 2166970 · TMA1254869 · design | Deks Industries Pty Ltd | 4 Oils6 Metal17 Rubber+1 | Registered | 2024 |
| DEKA 2009173 · TMA1281924 | Spartan Race, Inc. | 41 Education | Registered | 2025 |
| DEK 1993034 · TMA1193169 | Keilhauer Ltd. | 20 Furniture | Registered | 2023 |
| DEKO 1848948 · TMA1156645 | 7912854 CANADA INC. | 20 Furniture | Registered | 2022 |
| DEK 1768321 · TMA1043653 | Winners Products Engineering Canada Ltd. | 11 Lighting21 Housewares | Registered | 2019 |
| DEKE 1603138 · TMA1008362 | Throat Threads Apparel Inc. | 25 Clothing | Registered | 2018 |
| DEK 1481629 · TMA856541 · design | TEK2SPORT INC. | 28 Toys | Registered | 2013 |
| DEKO 1350542 · TMA717113 · design | Advantage Cochrane Sport Inc / Avantage Cochrane Sport Inc | 19 Building | Registered | 2008 |
| DEKE 1329378 · TMA840177 | Throat Threads Apparel Inc. | 25 Clothing | Registered | 2013 |
| DEKA 0871199 · TMA527958 | BY-CAST A JOINT STOCK COMPANY | 9 Electronics11 Lighting16 Paper | Registered | 2000 |
| DEKA 0654212 · TMA391226 | EAST PENN MANUFACTURING CO. | 8 Hand9 Electronics11 Lighting+1 | Registered | 1991 |
| DEKA 2188172 | Imperative Care, Inc. | 10 Medical | Pending | 2022 |
| Deka 2187985 | an individual | 9 Electronics38 Telecommunications42 Science | Pending | 2022 |
| DEKA 2124970 · design | Spartan Race, Inc. | 25 Clothing41 Education44 Medical | Pending | 2021 |
| DK2 2100998 | Detail K2 Inc. | 7 Machines9 Electronics12 Vehicles | Pending | 2021 |
| DESKY 2176357 · TMA1259453 | DESKY PTY LTD | 20 Furniture35 Advertising | Registered | 2024 |
| DEKCO 2159247 · TMA1219205 · design | GLAZERO INTERNATIONAL INC | 9 Electronics | Registered | 2024 |
| DEAKO 1893934 · TMA1111694 | Deako, Inc. | 9 Electronics11 Lighting20 Furniture | Registered | 2021 |
| DEKIA 1778622 · TMA970977 · design | Guangzhou Dumor Automation System Co.Ltd. | 7 Machines | Registered | 2017 |
| DEKKA 1595731 · TMA871546 | Wexxar Packaging Inc. | 7 Machines | Registered | 2014 |
| DECKX 1445766 · TMA780416 · design | TRANSX LTD. | 39 Transport | Registered | 2010 |
| DEKIO 1441341 · TMA842259 | an individual | 35 Advertising38 Telecommunications41 Education+1 | Registered | 2013 |
| DECKX 0810828 · TMA474626 | TRANSX LTD. | 39 Transport | Registered | 1997 |
| DECKO 2358318 | Michel Sales Company | 6 Metal7 Machines9 Electronics+2 | Pending | 2024 |
| DECO2 2156124 · design | an individual | 37 Construction | Pending | 2021 |