| SOLIDSTART 1799466 · TMA1038406 | PACIFIC WOODTECH CORPORATION | 9 Electronics42 Science | Registered | 2019 |
| SOLIDSTART 1539910 · TMA848933 | PACIFIC WOODTECH CORPORATION | 19 Building35 Advertising | Registered | 2013 |
| SOLIDCORE 2197567 · TMA1222475 | SOLIDCORE ASSETS, LLC | 41 Education | Registered | 2024 |
| SOLIDSILK 2168889 · TMA1219909 | Earth & Daughter, LLC (DBA No Tox Life) | 3 Cosmetics | Registered | 2024 |
| SOLIDCORE 2128164 · TMA1173978 | SOLIDCORE ASSETS, LLC | 25 Clothing41 Education | Registered | 2023 |
| SOLIDCOS 1874800 · TMA1077258 | Owner not shown | 3 Cosmetics | Registered | 2020 |
| SOLIDOSE 1051864 · TMA593494 | SolidTech Animal Health, Inc. | 5 Pharmaceuticals | Registered | 2003 |
| SOLIDOX 0992385 · NFLD2385 | UNILEVER PLC | 3 Cosmetics | Registered | 1940 |
| SOLIDSVAC 2252007 · design | Owner not listed | 7 Machines | Pending | 2023 |
| SolidCUT 2218871 | Messer Canada Inc. | 7 Machines | Pending | 2022 |
| SOLIDCAST 2119819 | AMERICAN BATH GROUP, LLC | 11 Lighting | Pending | 2021 |
| SOLIDIGM 2173327 · TMA1246350 | SK hynix NAND Product Solutions Corp. | 9 Electronics35 Advertising40 Treatment | Registered | 2024 |
| SOLITECT 2138243 · TMA1219136 | Toray Kabushiki Kaisha (Toray Industries Inc.) | 24 Textiles25 Clothing | Registered | 2024 |
| SolidTech 2026276 · TMA1134934 | Cantrio Koncepts Inc | 11 Lighting | Registered | 2022 |
| SOLIDUS 1933678 · TMA1141525 | CannTx Life Sciences Inc. | 31 Fresh34 Tobacco35 Advertising | Registered | 2022 |
| Solodko 1681735 · TMA958298 | an individual | 30 Coffee43 Restaurants | Registered | 2016 |
| SOLIDQ 1539934 · TMA854895 · design | an individual | 16 Paper41 Education42 Science | Registered | 2013 |
| SOLUDOS 1493550 · TMA835048 | Soludos LLC | 25 Clothing | Registered | 2012 |
| SOLIDOGEN 0210060 · UCA39498 | Clariant Produkte (Deutschland) GmbH | 1 Chemicals | Registered | 1951 |
| SolidJS 2164706 | an individual | 42 Science | Pending | 2022 |
| SOLHYDGROUT 1793149 · TMA1016038 | SOLHYDROC INC. | 19 Building35 Advertising41 Education+1 | Registered | 2019 |
| SOLIDCORNER 1530411 · TMA844782 | Milltech Millwork Ltd. | 19 Building | Registered | 2013 |
| SOLIDSCREEN 1157240 · TMA687631 | Bio-Rad Europe GmbH | 1 Chemicals5 Pharmaceuticals9 Electronics | Registered | 2007 |
| SolidXperts 2081338 | SOLID XPERTS INC. | 42 Science | Pending | 2021 |
| SLOTOWAYS 2253033 · TMA1222561 | Playtika, Ltd. | 9 Electronics41 Education | Registered | 2024 |